Спутник ФКИ. THEMIS-A. [Редактировать]

Научный малый космический аппарат несущий на своем борту комплект научной аппаратуры для изучения электрического и магнитного полей, а также потоков частиц.
На аппарате установлены:

  • измеритель электрического поля EFI;
  • феррозондовый магнитометр FGM;
  • индукционный магнитомер SCM;
  • электростатический анализатор ESA;
  • твердотельный телескоп SST.

Дополнительные наименования

#НаименованияПоиск в новостяхПоиск в документах
1Explorer 85НайтиНайти

Дополнительная классификация

1Страна оператор(владелец) - Международные
2Тип оператора(владельца) - государственный
3Тип орбиты - Элиптическая
4Страна производитель - США

Технические характеристики

1Масса, кг77
2Мощность, Вт37.0

Характеристики орбиты

1Наклонение, град12.8
2Апогей, км66750.7
3Апогей, км66691.0
4Перигей, км771.7
5Перигей, км823.5
6Период, минут1333.5
7Период, минут1333.3
8САС7 лет, 2 месяца и 5 дней
9Длинный диаметр эллипса, км40132
10Длинный диаметр эллипса, км40128

Пусковые характеристики

1Код NSSDC2007-004A

Экономические характеристики

#ХарактеристикаДата измеренияЗначение
1Стоимость (аппарат), млн. долл.20
2Оператор Космическое агентство США

Информация об удачном запуске

1Дата пуска2007-02-17 at 23:01:00 UTC
2Полезная нагрузка 1xTHEMIS-A
3Полезная нагрузка 1xTHEMIS-B (ARTEMIS-P1)
4Полезная нагрузка 1xTHEMIS-C (ARTEMIS-P2)
5Полезная нагрузка 1xTHEMIS-D
6Полезная нагрузка 1xTHEMIS-E
7Ракета-носитель 1xДельта 2 7925

Найдено 910 документов по запросу «THEMIS-A». [Перейти к поиску]

Дата загрузки: 2017-04-09
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The Revised Concept of the THEMIS and MMS Coordination S. Frey (1), V. Angelopoulos... in February 2007 the NASA THEMIS mission has been tracking the... of the alignment of the THEMIS and MMS orbits allows prolonged... orbiting probes while frequently synchronizing THEMIS apogee passes with those of... THEMIS probes in order to quantify local processes. Keywords: Mission design, THEMIS... and Macroscale Interactions during Substorms (THEMIS) has been tracking the flow... we formed the combined missions THEMIS and 1 ARTEMIS (Acceleration, Reconnection, Turbulence...-scale constellation of the five THEMIS probes and their coordination with... separations between the Earth orbiting THEMIS probes with the Van Allen... of the orbit alignment of THEMIS and MMS allows prolonged simultaneous... came with unprecedented challenges. The THEMIS mission, already in orbit, has...-mission alignment. As previously reported [7] THEMIS has committed its long-term... upcoming first year of coordinated THEMIS-MMS mission is described in... Coordination 2.1 The revised THEMIS-MMS Alignment The THEMIS mission is dedicated to... two winter seasons when the THEMIS apogees line up in the...-scale formation by placing the THEMIS probes at three vertices of... the rotation rate of the THEMIS lines of apsides by reducing... a launch in fall of 2014 THEMIS would have been within a few... in opposing apogees and the THEMIS fuel reserves became insufficient to... reversing the drift of the THEMIS orbits alone. For a comprehensive analysis... the revised alignment of the THEMIS and MMS orbits where the... MMS on the dayside and THEMIS in the tail both missions... MMS on the nightside and THEMIS on the dayside. By keeping... at the higher apogee altitudes. THEMIS will continue to observe beyond... drivers of magnetic reconnection when THEMIS apogees are magnetically connected to... in addition to MMS and THEMIS (THM). Figure 2: Snapshots of constellations... (Jul. 2017, phase 2, left) and THEMIS at northern polar regions in... MMS (red) and THEMIS (blue, cyan, purple). 4 The THEMIS science goal for... advantage of the closely aligned THEMIS lines of apsides in 2015... though the science goals of THEMIS and MMS are strongly related... and strategy of each mission. THEMIS has a strong time constraint on... term planning through 2020 2. Define THEMIS science with the safety constraints... term planning through 2020 3. Synchronize THEMIS and MMS apogee passes; targeting... near term planning, we tune THEMIS separation and orbit-phase according... community as soon as the THEMIS-MMS coordination became a possibility has... a method described in [10]. The THEMIS apogee times are defined for... overlap between MMS magnetopause coverage, THEMIS crossings with the neutral sheet...-entry maneuvers. Figures 3-5 show that THEMIS perigee altitudes fluctuate by about... fall 2019 P4 P3 7 Figure 3: THEMIS Perigee altitudes over 3 years starting.... Figure 4: THEMIS Perigee altitudes over 4 years starting January 2020. Figure 5: THEMIS Perigee... in blue, cyan, purple. Figure 6: THEMIS Perigee altitudes starting in January... to minimize differential precession among THEMIS probes and with MMS as... for THEMIS probes and for THEMIS seasons 2015 to 2017. MMS THEMIS P3... for THEMIS probes P3 (blue), P4 (cyan, green), P5 (purple) vs THEMIS... defines the altitude for the THEMIS string-of-pearls formation in... 7 illustrates fuel consumption for the THEMIS probes. 3.3 Synchronization of Apogee Pass..., we optimize the conjunctions between THEMIS and MMS, with the neutral... the First Year of Coordinated THEMIS-MMS Conjunctions With the MMS... launch delays and dispersion. Each THEMIS season is set up by... without challenges. The setup of THEMIS tail season T8 aimed at... for THEMIS probes P3 (top) and P4 (bottom) during setup of THEMIS... (phase 1x) in summer 2016 THEMIS will be on the dayside... for auroral imaging. Unlike the THEMIS GBOs the southern observatories are... deployed to specifically align with THEMIS orbits. In order to optimize... pass times for the two THEMIS probes on the lower orbit.... For the setup of the THEMIS Dayside D8 the individual maneuver... has become characteristic for the THEMIS/ARTEMIS extended mission that the... of the team. 4. Summary The THEMIS mission has always been committed... space environment. For many years THEMIS has progressively utilized its resources... team for their cooperation. The THEMIS operations and flight dynamics team... recognition for their commitment. The THEMIS and ARTEMIS missions are operated.... 6. References [1] http://themis.ssl.berkeley.edu [2] Angelopoulos, V., The THEMIS mission, Space Science..., V., and D. G. Sibeck, THEMIS Senior Review Proposal, 2013, http://themis.igpp.ucla.edu..., V., and D. G. Sibeck, THEMIS Senior Review Proposal, 2015, http://themis.igpp.ucla.edu...-x, 2014. [7] Frey S. et al., Innovative THEMIS extended mission design and implementation... S, et al., Alignment of the THEMIS low extended mission with the.../2015SW001229. [12] Bester M., et al., THEMIS Operations, Space Science Reviews, Vol... 1-4, 2008. [13] Frey S. et al., THEMIS: Implementation of a Challenging Missions Design...

Дата загрузки: 2017-04-24
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... of Buenos Aires, 2001–20051 Themis Chronopoulos Taylor and Francis Ltd... Photograph: San Martín, Themis June Chronopoulos. 2005. Photograph: Themis Chronopoulos. Figure 1 Work... San Martín, June 2005. Photograph: Themis Chronopoulos. ISSN 1360-4813 print... same community, June 2005. Photograph: Themis Chronopoulos. Buenos Aires and Gran... Photograph: ainneighbourhood Buenos neighbourhood Aires, Themis of northern located June Chronopoulos... June Themis 2005. ofJune Gran Chronopoulos. Photograph: 2005. Buenos When Aires. Themis... Buenos Aires, June 2005. Photograph: Themis Chronopoulos. Figure 4 Cartonero in Recoleta... Buenos Aires, June 2005. Photograph: Themis Chronopoulos. 170 CITY VOL. 10.... Photograph: Themis Chronopoulos. Figure 6 Cartonera in Recoleta, June 2005. Photograph: Themis Chronopoulos... the 2005. westbusiness zone Walls, Themis of ain Gran gate, Chronopoulos... place and sell them. Photograph: Themis Chronopoulos. this law did not... place and sell them. Photograph: Themis Chronopoulos. 172 CITY VOL. 10... of a roof are visible. Photograph: Themis Chronopoulos. Figure 9 The inside of... San Alberto, June 2005. Photograph: Themis Chronopoulos. CHRONOPOULOS: NEO-LIBERAL REFORM... San Alberto, June 2005. Photograph: Themis Chronopoulos. turing outlets and factories... La Paternal, June 2005. Photograph: Themis Chronopoulos. CHRONOPOULOS: NEO-LIBERAL REFORM... La Paternal, June 2005. Photograph: Themis Chronopoulos. order to survive the... Gran these a shopping Buenos have Themis become Aires cart Chronopoulos. rather... him Buenos Themis withChronopoulos. Aires. maximum Chronopoulos. Photograph: flexibility Themis in small.... make Photograph: dolls like these. Themis June Chronopoulos. 2005. Photograph: 176... garment district, June 2005. Photograph: Themis Chronopoulos. Figure 13 A household in... like these. June 2005. Photograph: Themis Chronopoulos. CHRONOPOULOS: NEO-LIBERAL REFORM..., Federal Capital, May 2005. Photograph: Themis Chronopoulos. Figure 15 A cartonero in... foot and vehicular traffic. Photograph: Themis Chronopoulos. 178 CITY VOL. 10... a mule that draws a cart. Photograph: Themis Chronopoulos. Figure 17 Cartoneros in... recyclables in Buenos Aires. Photograph: Themis Chronopoulos. CHRONOPOULOS: NEO-LIBERAL REFORM..., San Carlos de Bariloche, Argentina. Themis Chronopoulos is an Assistant Professor... University, New York, USA. E-mail: Themis.Chronopoulos@stonybrook.edu

Дата загрузки: 2017-04-08
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... the THEMIS extended mission. ARTEMIS comprises two of the five THEMIS spacecraft... and Macroscale Interactions during Substorms (THEMIS) mission [1]. ARTEMIS will use simultaneous... – by the solar wind [2]. The THEMIS mission comprises five identical spacecraft... the cause of geomagnetic substorms. THEMIS was launched onboard a Delta-II...) provides spacecraft operations support for THEMIS. Tracking, telemetry, and command services... (GN) and Space Network (SN).   THEMIS answered longstanding fundamental questions concerning... the more global substorm phenomena. THEMIS accomplished these tasks by employing... and geomagnetic perturbations. The five THEMIS spacecraft were placed in highly.... Initially, right after launch, the 5 THEMIS spacecraft were lined up in... achieve the mission orbits. The THEMIS mission orbits relative to the... 5: 1.5 x 10 Re Fig. 1. THEMIS Constellation Configuration The THEMIS team has achieved the primary science objectives of the THEMIS mission. The extended science mission will keep the three innermost THEMIS... probes P1 and P2. The THEMIS team had long known that.... Their operations experience with the THEMIS spacecraft and ground systems engineering... and tools to allow the THEMIS spacecraft to become ARTEMIS. We...

Дата загрузки: 2017-04-23
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... recent discoveries from the NASA THEMIS mission of the discovery of... of Macroscale Interactions during Substorms (THEMIS), and Van Allen Probes However... of Macroscale Interactions during Substorms (THEMIS; Angelopoulos, 2008; Angelopoulos et al... the initiation of a substorm. The THEMIS mission goal was to focus... measurements of substorm aurorae. The THEMIS mission comprised five satellites in... onset. Although low-resolution, the THEMIS ASIs provided low-cost, high...? It was with the NASA THEMIS mission that the BEADS science... release from the magnetotail. Using THEMIS ground- based auroral cameras, Rae... measurements such as from the THEMIS mission provide auroral measurements and... SuperDARN, EISCAT, THEMIS GBO, and space-based facilities include THEMIS and Van....1038/ncomms6197. Angelopoulos, V. (2008), The THEMIS Mission, Space Sci. Rev., 141...

Дата загрузки: 2017-03-10
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... (UT) at THEMIS-A and THEMIS-D and at ~2010 UT at THEMIS-E as these...) from the phase delay between THEMIS-A and THEMIS-D. This wave number explains..., represents the location of the THEMIS spacecraft for the observations described... of the observations. Section 4 presents THEMIS data. Section 5 examines GOES data... conclusions. 2. Experiments [15] The THEMIS-A, THEMIS-D, and THEMIS-E spacecraft are the main source... strongly affected the measurement. The THEMIS data are supplemented by magnetic....: FUNDAMENTAL POLOIDAL WAVES 2008 50 THEMIS-A THEMIS-D THEMIS-E GOES-11 (a) Dst (nT) 10... shows the orbits of the THEMIS-A, THEMIS-D, and THEMIS-E spacecraft and the geostationary... THEMIS spacecraft were on nearly identical orbits but with a time delay: THEMIS-D trailed THEMIS-A by ~40 min and THEMIS-E trailed THEMIS-D by ~90... Figure 4. (a) GSE X and Y positions of THEMIS-A, THEMIS-D, THEMIS-E, and GOES-11 on 10... waves described in the text. (a) THEMIS-A. (b) THEMIS-D. (c) THEMIS-E. 4324 TAKAHASHI ET AL.: FUNDAMENTAL... that during the wave observations, THEMIS-A and THEMIS-D had nearly identical L values... 4d), and THEMIS-D was closer to the magnetic equator than THEMIS-A (Figure... latitude (MLAT) of ~5°. Vφ Velocity Vμ Vν Vφ Vμ Vν Vφ Vμ THEMIS-D Vν THEMIS-E 100 km/s THEMIS-A (a) 4. Magnetic field Bμ Bν Bφ Bμ Bν Bφ Bμ 17:00 18:00 19:00 20:00 THEMIS-D Bφ THEMIS-E Bν THEMIS... detected by THEMIS spacecraft. (a) Ion bulk velocity at THEMIS-A, THEMIS-D, and THEMIS-E. The data... UT at THEMIS-A and THEMIS-D and 1945–2030 UT at THEMIS-E. (b) Magnetic field at the same THEMIS.... According to the model, THEMIS-A, THEMIS-D, and THEMIS Data 4.1. Bulk Velocity Dynamic Spectra... figure shows dynamic spectra for THEMIS-A, THEMIS-D, and THEMIS-E computed for the whole...] The Vν and Vϕ spectra at each THEMIS spacecraft exhibit continuous narrow-band... measured V and B oscillations at the THEMIS spacecraft. The waves are classi..., however, the PSD at THEMIS-A and THEMIS-D is higher in the Vν component... delayed by ~2 h relative to THEMIS-A and THEMIS-D, and the spectral intensity is... 6 Velocity Vν Vφ Vμ 5 10 10 THEMIS-A 1745-1900 UT 10 4 (b) THEMIS-A 1745-1900 UT 1 10 3 0 10 10 2 -1 10 10 1 -2 10 6 10 (c) THEMIS... THEMIS-D 1745-1900 UT 2 10 1 10 0 10 -1 10 -2 10 3 (f) 10 THEMIS-E 1945-2030 UT 5 THEMIS-E 1945-2030 UT 2 10... interval of poloidal waves at THEMIS-A, THEMIS-D, and THEMIS-E, as identified in... the poloidal waves detected at THEMIS-A and THEMIS-D. 1700–2100 UT. To... UT at THEMIS-A and THEMIS-D and 1945–2030 UT at THEMIS-E. [27] The poloidal waves at THEMIS-A and THEMIS-D exhibit very... at THEMIS-E were observed with ~2 h delay from those at THEMIS-A and THEMIS-D. This.... (a) L versus MLT location of THEMIS-A, THEMIS-D, and THEMIS-E for 1810–1840 UT on... UT. (b) Hodograph for THEMIS-A. (c) Hodograph for THEMIS-D. (d) Hodograph for THEMIS-E. identified in... Vν spectral peak at THEMIS-A and THEMIS-D. Spectral peaks at THEMIS-D occur at a slightly... is 1.5 at THEMIS-D (MLAT ~ À2°), whereas the ratio is 3.3 at THEMIS-A (MLAT ~ À7°). The... poloidal wave activity observed by THEMIS-A and THEMIS-D. The tracks of the... are shown in Figure 8a. THEMIS-A and THEMIS-D had virtually identical L values.... [35] The hodographs at THEMIS-A (Figure 8b) and THEMIS-D (Figure 8c) are... and have comparable amplitudes. At THEMIS-E (Figure 8d), located just 0.6 RE... that the poloidal waves at THEMIS-A and THEMIS-D were not directly driven... magnetopause (i.e., the Kelvin-Helmholtz instability). THEMIS-A (a) Vν 100 km/s Bν 2 nT 18:00...-1 (c) 10 November (Day 315) 2008 THEMIS-A and -D 0.5 (a) 0.0 180 A (d) 90 100 km... the poloidal wave observed at THEMIS-A. (a) Time series. (b–d) Cross-spectral parameters... the poloidal waves observed by THEMIS-A and THEMIS-D. (a) Comparison of the Vν waveforms...] The relative position of the THEMIS-A and THEMIS-D, shown in Figures 4 and... phase value of À92° (THEMIS-D lagged behind THEMIS-A by 92°) (Figure 10d.... (a) Bμ-component time series at the THEMIS-A, THEMIS-D, and THEMIS-E spacecraft. (b) Three components of... same local time sector as THEMIS-A and THEMIS-D but approximately 2 RE inward... ~1 h earlier than that at THEMIS-A and THEMIS-D, but the local times match... number similar to that at THEMIS. (a) Velocity THEMIS-A 100 km/s Vν 7. H 10 nT... polarization consistent with that at THEMIS. [49] 4. The poloidal waves exhibited.... Auster, H. U., et al. (2008), The THEMIS fluxgate magnetometer, Space Sci. Rev..., V. Angelopoulos, K.-H. Glassmeier, and U. Auster (2008), THEMIS ESA first science results and... magnetopause motion: First results from THEMIS, J. Geophys. Res., 114, A00C10, doi..., D. R. Pierce, K. M. Rowe, and R. C. Snare (2008), THEMIS ground-based magnetometers, Space Sci...), Characterization of ULF pulsations by THEMIS, Geophys. Res. Lett., 36, L04104...

Дата загрузки: 2017-03-09
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... and Macroscale Interactions during Substorms (THEMIS) mission (5 identically-instrumented probes) was... Sun (ARTEMIS) mission. The combined THEMIS/ARTEMIS mission is an important... reserves on the remaining three THEMIS probes allowed for redesigning and... implementation of THEMIS orbit changes to produce an optimal THEMIS-MMS tetrahedral... de-orbit. Keywords: Mission design, THEMIS, magnetospheric constellation, maneuver planning. 1. Introduction... and Macroscale Interactions during Substorms (THEMIS), a NASA Medium Explorer (MIDEX) mission... Sun (ARTEMIS) mission.The combined THEMIS/ARTEMIS mission is an important.../]. Combining these spacecraft with the THEMIS probes in a tetrahedral formation at... to conduct magnetospheric studies. The THEMIS and ARTEMIS probes are equipped... within the science requirements [1]. With THEMIS in its eighth year, fuel... goals from nominal into extended THEMIS missions drives orbit design. We... relative positioning of the three THEMIS probes to support measurements coordinated... THEMIS-MMS conjunctions. The challenge here is to leave room for THEMIS... conclude with a short summary. Figure 2: THEMIS probes at their proposed (left... Drive Orbit Design 2.1 THEMIS Nominal Mission 2007-2009 THEMIS is a science mission... Sun-Earth connection [2]. When the THEMIS mission was developed, geomagnetic substorms... phenomena. The purpose of the THEMIS mission was to provide simultaneous... questions about event timing. 3 The THEMIS baseline mission focused solely on... sheet) [4]. Table 1. Orbit parameters for THEMIS probes during the nominal mission... back. Regardless of launch date, THEMIS mission design called for tail... solar wind. These separations allowed THEMIS to dedicate secondary and tertiary... 3: Division of the THEMIS mission into the extended THEMIS and ARTEMIS missions... assets via onboard propulsion. Each THEMIS probe has a monopropellant hydrazine propulsion... [4]. With at least 24 unprecedented THEMIS tail conjunctions such as those... more than 100 substorms studied, THEMIS observations enabled determination of the... at 6 Re on the nightside. 2.2. THEMIS Extended Mission 2010-2014 After... and holding remarkable fuel reserves, THEMIS was ready to reposition the... the magnetosphere. With these observations THEMIS advanced from the macro-scale... into a stretched tail field. Figure 6: THEMIS clustered meridional configuration during the... equatorial magnetosphere illustrating how the THEMIS probes cover various local times... equal separations of 8-8-8 h. Early key THEMIS results on the dayside included... consequences through local particle acceleration. THEMIS nightside results confirmed that quiet... events when the dipole expands. THEMIS observations have also provided evidence.... 2.3. Future THEMIS Extended Mission 2015-2018 Ever since in orbit THEMIS has... continuous complementary observations. Because of THEMIS’s large-scale separations, at least... phase one. THEMIS is shown with the inner probes (THEMIS low) P3... and THEMIS P3 at ~16 Re. Now in its eighth year, THEMIS... magnetosphere. As shown in Fig. 8, THEMIS will link reconnection observations by... seasons in northern winter, the THEMIS GBOs will again provide continuous... the extended THEMIS mission included the possibility of aligning THEMIS orbits with... rate of the THEMIS lines of apsides so THEMIS probes would meet... fine-tuned the THEMIS orbit drift rate to optimize THEMIS-MMS alignment... well as apogee altitudes. Table 2: THEMIS and MMS season timelines for... nominal missions. In season D5, THEMIS began to increase the precession... the THEMIS orbits are being coordinated with the MMS team. THEMIS MMS... targets for the alignment with THEMIS probes. Under the new conditions... that this new reconfiguration of THEMIS orbits leave insufficient fuel reserves... after MMS has been launched. THEMIS demonstrated this flexibility prior to... a fixed tail season center epoch. THEMIS launch resulted in a one-year... an apogee of 14 Re [2]. 3. THEMIS Extended Mission Implementation Significant fuel... fuel consumption. Attitude controls on THEMIS, necessary once or twice per... an updated mission design. The THEMIS extended mission alternates between microsystem... THEMIS probe separations with the Van Allen Probes. The 14 proposed THEMIS... tools across missions. 7. Acknowledgments The THEMIS and ARTEMIS missions are operated... NAS5-02099. 7. References [1] Sibeck, D.G., V. Angelopoulos, THEMIS science objectives and mission phases...-008-9393-5, 2008. [2] Angelopoulos, V., The THEMIS mission, Space Science Reviews, 141..., E. Donovan, B. Jackel, M. Greffen, L.M. Peticolas, The THEMIS array of ground-based observatories..., D. Rummel, Orbit design for the THEMIS mission, Space Science Reviews, 114..., V., and D. G. Sibeck, THEMIS Senior Review Proposal, 2010, http://themis.igpp.ucla.edu/pubs/reports/2010_proposals_reports.html. [6] Angelopoulos, V., and D. G. Sibeck, THEMIS Senior Review Proposal, 2013, http://themis.igpp.ucla.edu.... Crossings of Geostationary orbit by THEMIS scientific satellites, Proceedings 23th International...

Дата загрузки: 2017-03-29
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... larger family asteroids, Eunomia, Koronis, Themis, and Eos for comparison. Note... of core members of the Themis family, taken as a candidate of... features in the lightcurve. In Themis family, one binary system (90... dry material. B-type members of Themis family show various slopes, it... averaged spectrum of members of Themis family (old C-type) is close... members of Themis and Veritas families, they found that Themis members show... spectra. This means that the Themis members have different hydration level...' chondrite'' Surface' part'is' dry Themis' family Large'Pallas'and' small... and B-type asteroids in the Themis family and the Pallas family...

Дата загрузки: 2017-04-23
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THEMIS Software Suite for Administrations & Fishing Fleet Management A comprehensive fisheries management tool THEMIS is a comprehensive data integration interface and a crucial tool for maintaining 24-hour fishing vessel surveillance. Whether you are onboard or in a monitoring center, you can choose a scalable solution that fits your needs. MONITORING THEMIS is capable of processing and displaying Vessel Monitoring System (VMS) reports for your national fleet as well as the vessels in a given zone regardless of the satellite provider (Inmarsat, Iridium, Argos, etc.). Customized alerts are easy to program to help monitor fishing activity. Friendly, intuitive graphic user interface (GUI) for visualizing active fleet on screen. A variety of customizable alerts are available including zone management, detection of prohibited actions (trans-shipment), auditing illegal behavior (speed limits, etc). FLEET MANAGEMENT Several smart tools will help your organization to manage its fleet and maritime areas. Advanced geo-fencing parameters support the control activity of your national fleet both inside and outside your EEZ. Zone management: Manage multiple restricted fishing zones including Marine Protected Areas and EEZ. Manage registration of your national fleet via our easy-to-use vessel management interface. CLS’s strength is its ability to integrate several different sources of data such as satellite radar imagery, oceanographic data and modeling. When combined, these data can enhance operational performance and support fishing management and monitoring. SURVEILLANCE & CONTROL THEMIS is capable of integrating data from a variety of sources (VMS, ERS, AIS, GPRS, radar, metocean…) for remote detection and identification of IUU vessels. Detect Illegal Unregulated and Unreported (IUU) fishing activity with a combination of satellite technologies including radar. Sat-AIS data can be combined with other data sources for a more complete picture of all vessels in a zone. MARINE RESOURCES MONITORING THEMIS provides several advanced functions to help preserve fish stocks and manage them in an economically sustainable manner. THEMIS integrates metocean and ERS data, allowing you to identify favorable fishing grounds and sustainably manage resources. Display of high resolution oceanography data (sea surface temperature, surface and subsurface currents, plankton density, thermocline, salinity…) . Above, fishing vessels congregate along the thermocline which are an indication of favorable fishing grounds. ERS reports : Electronic catch reporting is the new era for better control of fishing activity. Regulate fishing effort thanks to a powerful statistics tool. DATA SECURITY • 24/7/365 assistance • 6 million VMS reports processed every day • State-of-the art security building with restricted access area • High availability data center with a SLA of 99.95% • Disaster Recovery Center hosted at the French Space Agency (CNES) Certified operators, systems & network administrators and application engineers ensure the highest levels of security and reliability while controlling the infrastructures necessary to host all these applications and process more than 12 million positions per day. CLS’s procedures and data security respond to the needs of a wide panel of clients, including governments. Our THEMIS Community A full proactive team is dedicated to THEMIS software management and development. All new developments are shared with the worldwide THEMIS COMMUNITY via yearly upgrades. In addition, CLS runs regular training programs to ensure that Fisheries Administrations continue to make optimum use of the system capabilites. Be part of the THEMIS COMMUNITY… ICCAT M0ROCCO BELIZE GUATEMALA HONDURAS CURAÇAO SALVADOR NICARAGUA PANAMA COSTA RICA MAURITANIA PHILIPPINES VIETNAM GUINEE BISSAU G HANA ECUADOR SEYCHELLES COMORES MOZAMBIQUE PERU NAMIBIA INDONESI A MADAG ASCAR IOC MAURITIUS VANUATU LA REUNION CHILE CLS- 01-2015 CCAMLR THEMIS - Fishing Monitoring Center Regional Fisheries Management Organization CLS Headquarters 11 rue Hermès Parc technologique du Canal 31520 Ramonville Saint-Agne - France E-mail: clsfishingteam@cls.fr Tel. +33 (0)5 61 39 47 20 Fax. +33 (0)5 61 39 47 97 www.cls.fr

Дата загрузки: 2017-01-23
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... location of substorm onsets from THEMIS satellite and ground based observations.... The unprecedented coverage of the THEMIS GBO station network coupled with... the substorm occurred between two THEMIS satellites and the impulses propagated... and Macroscale Interactions during Substorms” (THEMIS) (Angelopoulos, 2008a) provides fundamentally new... more detail later. 2814 Fig. 1. THEMIS satellite positions GSM x and y in... signature at substorm onset. The THEMIS satellite constellation consists of three... dipolarization. Detailed design of the THEMIS mission, the satellites and their...–2008. During prior years the THEMIS ground based observatories GBO-s were... satellite based data from the THEMIS observations. We will discuss several... et al.: THEMIS substorm onsets timing ing two THEMIS conjunctions. We chose... UT On 2 February 2008 the THEMIS satellite constellation was in a favorable... remarkable that the farthest satellite THEMIS B, located far in the magneto... relatively large GSM z coordinate of THEMIS-B the satellite shows that they... et al.: THEMIS substorm onsets timing 2815 Figure 2. Observations with THEMIS B (x=-29.6, y=-1.38, z=-8.65) of magnetic field Fig. 2. Observations with THEMIS... remarkable that the farthest satellite THEMIS B, located far in the magneto... thethat thermal energy associated with THEMIS the plasma 8.5 Re yellow vertical... to THEMIS B. We can subtract Tdiff from the ordinate value at THEMIS... and times. S. Mende et al.: THEMIS substorm onsets timing Figure 5 illustrates... a substorm was observed by satellite THEMIS A (located at 8.5 RE yellow vertical... to THEMIS B. We can subtract Tdiff from the ordinate value at THEMIS B and draw a horizontal line to the X radial location of THEMIS... difference between the ordinates at THEMIS B and THEMIS A to obtain a solution for... light. Figure 10 shows the THEMIS satellite magnetometer signatures for the... of the magnetic impulse at THEMIS B and THEMIS A we obtained consistent solutions... comparing the propagation from THEMIS B to A and from THEMIS B to D can be..., 2009 2820 S. Mende et al.: THEMIS substorm onsets timing 3 Fig. 9. Magnetic... when the magnetic signature reaches THEMIS A. THEMIS A is in the correct local... THEMIS D and E. By making the assumption that the substorm started between THEMIS A and THEMIS B we can calculate the... outward traveling magnetic signature at THEMIS B and their model predicts the... of the magnetic impulse at THEMIS B and THEMIS A yields self consistent starting....: THEMIS substorm onsets timing 2821 Fig. 10. THEMIS magnetometer data from THEMIS satellites... and THB. Figure 10. THEMIS magnetometer data from THEMIS satellites A,B, D and E. The... s ∼1 or Figure 10 shows the THEMIS satellite magnetometer signatures forofthe UT..., 2009 2822 S. Mende et al.: THEMIS substorm onsets timing Table 1. Timing.... satellite for the event of THEMIS A, D, and topshere is considerably “smaller.... The blue and from THEMIS B to A E and from THEMIS B to D can be... when the magnetic signature reaches THEMIS A. 5. By considering first the time... that although signature between THEMIS Astarted and THEMIS B we calculated the onthis... the classic substorm poleimpulse at THEMIS B and THEMIS A yielded a consisward expansion phase... and the THEMIS satellites. They based their analysis on preliminary THEMIS satellites...:50 for THEMIS B and at ∼08:17:00 forFigure THEMIS D14. and... auroral zone with the THEMIS GBO chain. These THEMIS A. THEMIS A is in the... satellite THEMIS A the location of the satellite THEMIS A (08:13:21) THEMIS B and...:17:00).and THEMIS D and E (8:17:00). (8:13:21) THEMIS onset in... pre-existing arc intensifics which THEMIS B and THEMIS A yields self consistent starting... by Akasofu roborated by the THEMIS satellite plasma measurements we calculated... a sinreconnection forces, noted furthermore the THEMIS D energetic the ground based SPE... 1. the magnetic foot print of a THEMIS satellite was too large startsignal... et al.: THEMIS substorm onsets timing 2827 Fig. 18. THEMIS A, B, D, and E magnetometer... cases they more Figure 18onset THEMIS D,auroral and onset E magnetometer plots... from onset timconjunctions of the THEMIS satellite constellation and our when... signal arrival at THEMIS A THEMIS A (c) 08:37:24 arrival at THEMIS B (d) 8:46:21... arrival at THEMIS B (d) 08:46:21 magnetic impulse reaches satellite THEMIS E. tion..., 273–282, 1964. Angelopoulos, V.: The THEMIS mission, Space Sci. Rev., 141..., E., Mende, S. B., Jackel, B., et al.: The THEMIS allsky imaging array-system design..., W., Liang, J., Spanswick, E., et al.: Simultaneous THEMIS in situ and auroral observations... time-varying reconnection rate to THEMIS observations. J. Geophys. Res., 114, A00C20... from a major conjunction interval of THEMIS satellites, J. Geophys. Res., 113, A00C04..., S. B., Harris, S. E., Frey, H. U., et al.: The THEMIS array of ground based observatories... timing and location using the THEMIS ground based observatories, Geophys. Res...–2830, 2009 S. Mende et al.: THEMIS substorm onsets timing Pellinen, R. J. and...

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... in data acquired by the THEMIS spacecraft In the previous chapter...’s magnetosheath by spacecraft from the THEMIS mission. THEMIS is a NASA Medium-class... Goddard Space Flight Center. The THEMIS mission consists of five identical... the initial orbital configuration, the THEMIS spacecraft were ideally positioned to... spacecraft. 5.1. THEMIS Instrumentation and Data Sets Each of the five THEMIS spacecraft... to reach the detector. The THEMIS mission has an open data... were analyzed by using the THEMIS project provided software. All data... time all five of the THEMIS spacecraft observed a set of mirror... of the THEMIS spacecraft were on outbound trajectories with THEMIS-C being the... Figure 5.1 Location of the five THEMIS spacecraft at 02:44 UTC... the Earth with THEMIS-C at the top and THEMIS-A at the bottom... their pre-event levels. At THEMIS A and E the compressional fluctuation levels... data (nT) from all five THEMIS spacecraft for the mirror mode..., and the local time of THEMIS-A are provided at the bottom... strength at each of the THEMIS spacecraft. The panels are in... magnetic field observations from the THEMIS D and A spacecraft and shows time... in the THEMIS-D data while dips were identified at THEMIS-A. The automated... to using them with the THEMIS data set for magnetosheath conditions... data (3 second averages) available from THEMIS than we had at Jupiter... on May 19, 2009 at THEMIS D (top) and A (bottom). Shading and... mode event as observed by THEMIS C, the most distant from the... the event as observed by THEMIS C, B, D, E and A respectively moving earthward from... Figure 5.6 Mirror mode observations from THEMIS B (top) and D (bottom) following the... components are not available for THEMIS D so anisotropy is not calculated... Figure 5.7 Mirror mode observations from THEMIS E (top) and A (bottom) following the... long before observing the event. THEMIS E crossed the magnetopause from the... approximate positions of the five THEMIS spacecraft in simulation coordinates. Spacecraft... bow shock to the five THEMIS spacecraft. Figure 5.9 shows contours of... approximate locations of the five THEMIS spacecraft are also shown on... plasma that is observed by THEMIS A and E crosses the bow shock... that reaches the other three THEMIS spacecraft (D, B, C) crosses the bow shock... 5.9 during the event, then the THEMIS C, B, and D spacecraft would have been... work and then examine the THEMIS data in relation to this.... 5.4. Particle Distribution Functions Observed by THEMIS-D when QuasiPeriodic Mirror Mode Structures... (colored, solid lines) observed at THEMIS-D and a bi-Maxwellian distribution function...:45 V⊥ V|| V|| Crest Trough Figure 5.14 THEMIS D color contoured particle velocity distribution... 5.5. Particle Distribution Functions Observed by THEMIS-C when Mirror Mode Peak Structures... velocity distribution function observed at THEMIS-C and a biMaxwellian distribution function characterized...:44 02:45 Figure 5.15 THEMIS-C color contoured particle velocity distribution... high resolution particle data from THEMIS-D during the time period where...]. 5.6. Particle Distribution Functions Observed by THEMIS-A when Mirror Mode Dip Structures... that were observed at the THEMIS-A spacecraft at a time when the... dip structures observed at the THEMIS A and E spacecraft and all of... 11 12 13 Figure 5.16 THEMIS-A color contoured particle velocity distribution... was observed by all five THEMIS spacecraft that were located at... data rates available from the THEMIS spacecraft by reducing the length... the data from the five THEMIS spacecraft and mirror mode structures... identify mirror structures in the THEMIS data. This result increases our... time to magnetopause crossings. The THEMIS spacecraft that were in the... observed in regions of low β (<2). THEMIS observed quasi-periodic mirror modes... above five. All of the THEMIS observations for this event are... plasma distributions observed at 135 THEMIS-D are consistent with the schematic... with our analysis of the THEMIS velocity distribution functions we analyzed... velocity distribution functions observed at THEMIS-C show cooling of particles in... the distribution functions observed at THEMIS A and E had contours that were...]. 136 Bibliography Angelopoulos, V. (2008), The THEMIS mission, Space Sci. Rev., 141..., and 16 others (2008), The THEMIS fluxgate magnetometer, Space Sci. Rev..., M. Marckwordt, and V. Angelopoulos (2008a), The THEMIS ESA plasma instrument and in...