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- 84df34de-8d78-4f98-bdd3-475d34cb364c definition "[Text from NASA's THEMIS home page http://www.nasa.gov/mission_pages/themis/spacecraft/SCM.html ] The Search Coil Magnetometer (SCM) measures low frequency magnetic field fluctuations and waves in three directions (tri-axial) in the Earth’s magnetosphere. Scientists believe that low frequency magnetic fluctuations and waves play an important role in triggering substorms. Frequencies of the waves range from several octaves below the lowest key on the piano (0.1 Hz) up to the top key on the piano (4 kHz). The SCM will measure this range to identify the instability that triggers substorms. Data from the SCM will be especially important in studying the waves in the “current disruption region” about 10 Earth Radii away from Earth in the magnetotail plasma sheet, as well as at larger distances where neutral lines are expected to form. Together with the other instruments of the THEMIS suite, the SCM will reveal the link between waves and the location(s) where substorms begin, thereby identifying the basic substorm mechanism. Group: Instrument_Details Entry_ID: SCM Group: Instrument_Identification Instrument_Category: Solar/Space Observing Instruments Instrument_Class: Magnetic Field/Electric Field Instruments Short_Name: SCM Long_Name: SEARCH COIL MAGNETOMETERS End_Group Group: Associated_Platforms Short_Name: THEMIS End_Group Online_Resource: http://www.nasa.gov/mission_pages/themis/spacecraft/SCM.html Online_Resource: http://themis.ssl.berkeley.edu/instrument_scm.shtml Sample_Image: http://www.nasa.gov/images/content/168039main_SCM_ETU_1_med.jpg Creation_Date: 2008-07-18 Group: Instrument_Logistics Instrument_Owner: CETP (France) Instrument_Owner: NASA (USA) End_Group End_Group" @default.
- 84df34de-8d78-4f98-bdd3-475d34cb364c id "1655056" @default.
- 84df34de-8d78-4f98-bdd3-475d34cb364c path_id 02c354fd-8e2d-4825-b786-aa4b0782d1d6 @default.
- 84df34de-8d78-4f98-bdd3-475d34cb364c path_id b2140059-b3ca-415c-b0a7-3e142783ffe8 @default.
- 84df34de-8d78-4f98-bdd3-475d34cb364c path_id bb175474-5e70-47be-8e1f-8dcd7563cc5b @default.
- 84df34de-8d78-4f98-bdd3-475d34cb364c path_label "Instruments" @default.
- 84df34de-8d78-4f98-bdd3-475d34cb364c path_label "Magnetic Field/Electric Field Instruments" @default.
- 84df34de-8d78-4f98-bdd3-475d34cb364c path_label "Solar/Space Observing Instruments" @default.
- 84df34de-8d78-4f98-bdd3-475d34cb364c prefLabel "SCM" @default.
- 84df34de-8d78-4f98-bdd3-475d34cb364c reference "" @default.
- 84df34de-8d78-4f98-bdd3-475d34cb364c tag "Instruments" @default.
!["[Text from NASA's THEMIS home page http://www.nasa.gov/mission_pages/themis/spacecraft/SCM.html ] The Search Coil Magnetometer (SCM) measures low frequency magnetic field fluctuations and waves in three directions (tri-axial) in the Earth’s magnetosphere. Scientists believe that low frequency magnetic fluctuations and waves play an important role in triggering substorms. Frequencies of the waves range from several octaves below the lowest key on the piano (0.1 Hz) up to the top key on the piano (4 kHz). The SCM will measure this range to identify the instability that triggers substorms. Data from the SCM will be especially important in studying the waves in the “current disruption region” about 10 Earth Radii away from Earth in the magnetotail plasma sheet, as well as at larger distances where neutral lines are expected to form. Together with the other instruments of the THEMIS suite, the SCM will reveal the link between waves and the location(s) where substorms begin, thereby identifying the basic substorm mechanism. Group: Instrument_Details Entry_ID: SCM Group: Instrument_Identification Instrument_Category: Solar/Space Observing Instruments Instrument_Class: Magnetic Field/Electric Field Instruments Short_Name: SCM Long_Name: SEARCH COIL MAGNETOMETERS End_Group Group: Associated_Platforms Short_Name: THEMIS End_Group Online_Resource: http://www.nasa.gov/mission_pages/themis/spacecraft/SCM.html Online_Resource: http://themis.ssl.berkeley.edu/instrument_scm.shtml Sample_Image: http://www.nasa.gov/images/content/168039main_SCM_ETU_1_med.jpg Creation_Date: 2008-07-18 Group: Instrument_Logistics Instrument_Owner: CETP (France) Instrument_Owner: NASA (USA) End_Group End_Group"](?object=%22%5BText%20from%20NASA's%20THEMIS%20home%20page%20%0Ahttp%3A%2F%2Fwww.nasa.gov%2Fmission_pages%2Fthemis%2Fspacecraft%2FSCM.html%20%5D%0A%0AThe%20Search%20Coil%20Magnetometer%20(SCM)%20measures%20low%20frequency%20magnetic%20field%20fluctuations%20and%20waves%20in%20three%20directions%20(tri-axial)%20in%20the%20Earth%E2%80%99s%20magnetosphere.%20Scientists%20believe%20that%20low%20frequency%20magnetic%20fluctuations%20and%20waves%20play%20an%20important%20role%20in%20triggering%20substorms.%20Frequencies%20of%20the%20waves%20range%20from%20several%20octaves%20below%20the%20lowest%20key%20on%20the%20piano%20(0.1%20Hz)%20up%20to%20the%20top%20key%20on%20the%20piano%20(4%20kHz).%20The%20SCM%20will%20measure%20this%20range%20to%20identify%20the%20instability%20that%20triggers%20substorms.%20Data%20from%20the%20SCM%20will%20be%20especially%20important%20in%20studying%20the%20waves%20in%20the%20%E2%80%9Ccurrent%20disruption%20region%E2%80%9D%20about%2010%20Earth%20Radii%20away%20from%20Earth%20in%20the%20magnetotail%20plasma%20sheet%2C%20as%20well%20as%20at%20larger%20distances%20where%20neutral%20lines%20are%20expected%20to%20form.%20Together%20with%20the%20other%20instruments%20of%20the%20THEMIS%20suite%2C%20the%20SCM%20will%20reveal%20the%20link%20between%20waves%20and%20the%20location(s)%20where%20substorms%20begin%2C%20thereby%20identifying%20the%20basic%20substorm%20mechanism.%0A%0A%0AGroup%3A%20Instrument_Details%0A%20%20%20Entry_ID%3A%20SCM%0A%20%20%20Group%3A%20Instrument_Identification%0A%20%20%20%20%20%20Instrument_Category%3A%20Solar%2FSpace%20Observing%20Instruments%0A%20%20%20%20%20%20Instrument_Class%3A%20Magnetic%20Field%2FElectric%20Field%20Instruments%0A%20%20%20%20%20%20Short_Name%3A%20SCM%0A%20%20%20%20%20%20Long_Name%3A%20SEARCH%20COIL%20MAGNETOMETERS%0A%20%20%20End_Group%0A%20%20%20Group%3A%20Associated_Platforms%0A%20%20%20%20%20%20Short_Name%3A%20THEMIS%0A%20%20%20End_Group%0A%20%20%20Online_Resource%3A%20http%3A%2F%2Fwww.nasa.gov%2Fmission_pages%2Fthemis%2Fspacecraft%2FSCM.html%0A%20%20%20Online_Resource%3A%20http%3A%2F%2Fthemis.ssl.berkeley.edu%2Finstrument_scm.shtml%0A%20%20%20Sample_Image%3A%20http%3A%2F%2Fwww.nasa.gov%2Fimages%2Fcontent%2F168039main_SCM_ETU_1_med.jpg%0A%20%20%20Creation_Date%3A%202008-07-18%0A%20%20%20Group%3A%20Instrument_Logistics%0A%20%20%20%20%20%20Instrument_Owner%3A%20CETP%20(France)%0A%20%20%20%20%20%20Instrument_Owner%3A%20NASA%20(USA)%0A%20%20%20End_Group%0AEnd_Group%22){kind=link}