{ "id": 13688, "url": "https://svs.gsfc.nasa.gov/13688/", "page_type": "Produced Video", "title": "NASA Explores Earth's Magnetic \"Dent\"", "description": "Music: \"Now We Wait\" by Kamal David Kamruddin [PRS]This video can be freely shared and downloaded. While the video in its entirety can be shared without permission, some individual imagery provided by pond5.com and Artbeats is obtained through permission and may not be excised or remixed in other products. Specific details on stock footage may be found here. For more information on NASA’s media guidelines, visit https://www.nasa.gov/multimedia/guidelines/index.html.Complete transcript available. || South_Atlantic_Anomaly_Still_2.jpg (1920x1080) [346.0 KB] || South_Atlantic_Anomaly_Still_2_print.jpg (1024x576) [139.2 KB] || South_Atlantic_Anomaly_Still_2_searchweb.png (320x180) [43.0 KB] || South_Atlantic_Anomaly_Still_2_web.png (320x180) [43.0 KB] || South_Atlantic_Anomaly_Still_2_thm.png (80x40) [4.8 KB] || 13688_South_Atlantic_Anomaly_Fine.mov (1920x1080) [2.6 GB] || 13688_South_Atlantic_Anomaly_Fine.webm (960x540) [65.7 MB] || 13688_South_Atlantic_Anomaly_Fine.mp4 (1920x1080) [292.9 MB] || 13688_South_Atlantic_Anomaly_Fine_lowres.mp4 (1280x720) [52.3 MB] || SAA.en_US.srt [3.5 KB] || SAA.en_US.vtt [3.5 KB] || ", "release_date": "2020-08-17T11:45:00-04:00", "update_date": "2023-05-03T13:44:45.144881-04:00", "main_image": { "id": 383413, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a013600/a013688/South_Atlantic_Anomaly_Still_2.jpg", "filename": "South_Atlantic_Anomaly_Still_2.jpg", "media_type": "Image", "alt_text": "Music: \"Now We Wait\" by Kamal David Kamruddin [PRS]This video can be freely shared and downloaded. While the video in its entirety can be shared without permission, some individual imagery provided by pond5.com and Artbeats is obtained through permission and may not be excised or remixed in other products. Specific details on stock footage may be found here. For more information on NASA’s media guidelines, visit https://www.nasa.gov/multimedia/guidelines/index.html.Complete transcript available.", "width": 1920, "height": 1080, "pixels": 2073600 }, "main_video": { "id": 383414, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a013600/a013688/13688_South_Atlantic_Anomaly_Fine.mov", "filename": "13688_South_Atlantic_Anomaly_Fine.mov", "media_type": "Movie", "alt_text": "Music: \"Now We Wait\" by Kamal David Kamruddin [PRS]This video can be freely shared and downloaded. While the video in its entirety can be shared without permission, some individual imagery provided by pond5.com and Artbeats is obtained through permission and may not be excised or remixed in other products. Specific details on stock footage may be found here. For more information on NASA’s media guidelines, visit https://www.nasa.gov/multimedia/guidelines/index.html.Complete transcript available.", "width": 1920, "height": 1080, "pixels": 2073600 }, "main_credits": { "Written by": [ { "name": "Jessica Merzdorf", "employer": "Telophase" }, { "name": "Mara Johnson-Groh", "employer": "Wyle Information Systems" } ], "Produced by": [ { "name": "Katie Jepson", "employer": "USRA" } ], "Scientific consulting by": [ { "name": "Weijia Kuang", "employer": "NASA/GSFC" } ], "Visualizations by": [ { "name": "Greg Shirah", "employer": "NASA/GSFC" } ] }, "progress": "Complete", "media_groups": [ { "id": 319241, "url": "https://svs.gsfc.nasa.gov/13688/#media_group_319241", "widget": "Video player", "title": "", "caption": "", "description": "Music: \"Now We Wait\" by Kamal David Kamruddin [PRS]

This video can be freely shared and downloaded. While the video in its entirety can be shared without permission, some individual imagery provided by pond5.com and Artbeats is obtained through permission and may not be excised or remixed in other products. Specific details on stock footage may be found here. For more information on NASA’s media guidelines, visit https://www.nasa.gov/multimedia/guidelines/index.html.

Complete transcript available.

", "items": [ { "id": 226224, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 383413, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a013600/a013688/South_Atlantic_Anomaly_Still_2.jpg", "filename": "South_Atlantic_Anomaly_Still_2.jpg", "media_type": "Image", "alt_text": "Music: \"Now We Wait\" by Kamal David Kamruddin [PRS]This video can be freely shared and downloaded. While the video in its entirety can be shared without permission, some individual imagery provided by pond5.com and Artbeats is obtained through permission and may not be excised or remixed in other products. Specific details on stock footage may be found here. 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For more information on NASA’s media guidelines, visit https://www.nasa.gov/multimedia/guidelines/index.html.Complete transcript available.", "width": 320, "height": 180, "pixels": 57600 } }, { "id": 226233, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 383420, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a013600/a013688/South_Atlantic_Anomaly_Still_2_thm.png", "filename": "South_Atlantic_Anomaly_Still_2_thm.png", "media_type": "Image", "alt_text": "Music: \"Now We Wait\" by Kamal David Kamruddin [PRS]This video can be freely shared and downloaded. While the video in its entirety can be shared without permission, some individual imagery provided by pond5.com and Artbeats is obtained through permission and may not be excised or remixed in other products. Specific details on stock footage may be found here. For more information on NASA’s media guidelines, visit https://www.nasa.gov/multimedia/guidelines/index.html.Complete transcript available.", "width": 80, "height": 40, "pixels": 3200 } }, { "id": 226227, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 383414, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a013600/a013688/13688_South_Atlantic_Anomaly_Fine.mov", "filename": "13688_South_Atlantic_Anomaly_Fine.mov", "media_type": "Movie", "alt_text": "Music: \"Now We Wait\" by Kamal David Kamruddin [PRS]This video can be freely shared and downloaded. While the video in its entirety can be shared without permission, some individual imagery provided by pond5.com and Artbeats is obtained through permission and may not be excised or remixed in other products. Specific details on stock footage may be found here. For more information on NASA’s media guidelines, visit https://www.nasa.gov/multimedia/guidelines/index.html.Complete transcript available.", "width": 1920, "height": 1080, "pixels": 2073600 } }, { "id": 226228, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 383415, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a013600/a013688/13688_South_Atlantic_Anomaly_Fine.webm", "filename": "13688_South_Atlantic_Anomaly_Fine.webm", "media_type": "Movie", "alt_text": "Music: \"Now We Wait\" by Kamal David Kamruddin [PRS]This video can be freely shared and downloaded. While the video in its entirety can be shared without permission, some individual imagery provided by pond5.com and Artbeats is obtained through permission and may not be excised or remixed in other products. Specific details on stock footage may be found here. For more information on NASA’s media guidelines, visit https://www.nasa.gov/multimedia/guidelines/index.html.Complete transcript available.", "width": 960, "height": 540, "pixels": 518400 } }, { "id": 226229, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 383416, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a013600/a013688/13688_South_Atlantic_Anomaly_Fine.mp4", "filename": "13688_South_Atlantic_Anomaly_Fine.mp4", "media_type": "Movie", "alt_text": "Music: \"Now We Wait\" by Kamal David Kamruddin [PRS]This video can be freely shared and downloaded. While the video in its entirety can be shared without permission, some individual imagery provided by pond5.com and Artbeats is obtained through permission and may not be excised or remixed in other products. Specific details on stock footage may be found here. For more information on NASA’s media guidelines, visit https://www.nasa.gov/multimedia/guidelines/index.html.Complete transcript available.", "width": 1920, "height": 1080, "pixels": 2073600 } }, { "id": 226234, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 383421, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a013600/a013688/13688_South_Atlantic_Anomaly_Fine_lowres.mp4", "filename": "13688_South_Atlantic_Anomaly_Fine_lowres.mp4", "media_type": "Movie", "alt_text": "Music: \"Now We Wait\" by Kamal David Kamruddin [PRS]This video can be freely shared and downloaded. While the video in its entirety can be shared without permission, some individual imagery provided by pond5.com and Artbeats is obtained through permission and may not be excised or remixed in other products. Specific details on stock footage may be found here. For more information on NASA’s media guidelines, visit https://www.nasa.gov/multimedia/guidelines/index.html.Complete transcript available.", "width": 1280, "height": 720, "pixels": 921600 } }, { "id": 226225, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 849335, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a013600/a013688/SAA.en_US.srt", "filename": "SAA.en_US.srt", "media_type": "Captions", "alt_text": "Music: \"Now We Wait\" by Kamal David Kamruddin [PRS]This video can be freely shared and downloaded. While the video in its entirety can be shared without permission, some individual imagery provided by pond5.com and Artbeats is obtained through permission and may not be excised or remixed in other products. Specific details on stock footage may be found here. For more information on NASA’s media guidelines, visit https://www.nasa.gov/multimedia/guidelines/index.html.Complete transcript available.", "label": "English", "language_code": "" } }, { "id": 226226, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 849336, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a013600/a013688/SAA.en_US.vtt", "filename": "SAA.en_US.vtt", "media_type": "Captions", "alt_text": "Music: \"Now We Wait\" by Kamal David Kamruddin [PRS]This video can be freely shared and downloaded. While the video in its entirety can be shared without permission, some individual imagery provided by pond5.com and Artbeats is obtained through permission and may not be excised or remixed in other products. Specific details on stock footage may be found here. For more information on NASA’s media guidelines, visit https://www.nasa.gov/multimedia/guidelines/index.html.Complete transcript available.", "label": "English", "language_code": "" } } ], "extra_data": {} }, { "id": 319240, "url": "https://svs.gsfc.nasa.gov/13688/#media_group_319240", "widget": "Basic text with HTML", "title": "", "caption": "", "description": "Earth’s magnetic field acts like a protective shield around the planet, repelling and trapping charged particles from the Sun. But over South America and the southern Atlantic Ocean, an unusually weak spot in the field – called the South Atlantic Anomaly, or SAA – allows these particles to dip closer to the surface than normal.
\r
Currently, the SAA creates no visible impacts on daily life on the surface. However, recent observations and forecasts show that the region is expanding westward and continuing to weaken in intensity. It is also splitting – recent data shows the anomaly’s valley, or region of minimum field strength, has split into two lobes, creating additional challenges for satellite missions.

The South Atlantic Anomaly is also of interest to NASA’s Earth scientists who monitor the changes in magnetic strength there, both for how such changes affect Earth's atmosphere and as an indicator of what's happening to Earth's magnetic fields, deep inside the globe.", "items": [], "extra_data": {} } ], "studio": "gms", "funding_sources": [ "PAO" ], "credits": [ { "role": "Writer", "people": [ { "name": "Jessica Merzdorf", "employer": "Telophase" }, { "name": "Mara Johnson-Groh", "employer": "Wyle Information Systems" } ] }, { "role": "Producer", "people": [ { "name": "Katie Jepson", "employer": "USRA" } ] }, { "role": "Scientist", "people": [ { "name": "Weijia Kuang", "employer": "NASA/GSFC" }, { "name": "Andrew Tangborn", "employer": "UMBC" }, { "name": "Terence J. 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There are versions that include the dates and colorbars and versions without the date and colorbat.This video is also available on our YouTube channel. || saa_intensity_comp2160_p60.4898_print.jpg (1024x576) [58.0 KB] || saa_intensity_comp2160_p60.4898_print_searchweb.png (320x180) [49.9 KB] || saa_intensity_comp2160_p60.4898_print_thm.png (80x40) [3.8 KB] || saa_intensity_comp_1080p30.mp4 (1920x1080) [31.9 MB] || saa_intensity_comp_1080p60.mp4 (1920x1080) [34.4 MB] || saa_intensity_dataOnly_1080_p30.mp4 (1920x1080) [29.3 MB] || saa_intensity_dataOnly_1080_p60.mp4 (1920x1080) [31.3 MB] || saa_intensity_dataOnly_1080_p30.webm (1920x1080) [9.1 MB] || dataOnly (1920x1080) [0 Item(s)] || saa_intensity_comp2160_p30.mp4 (3840x2160) [86.1 MB] || saa_intensity_comp2160_p60.mp4 (3840x2160) [93.1 MB] || comp (3840x2160) [0 Item(s)] || captions_silent.29860.en_US.srt [43 bytes] || saa_intensity_dataOnly_1080_p30.mp4.hwshow [197 bytes] || ", "release_date": "2020-08-17T11:00:00-04:00", "update_date": "2025-01-06T00:18:21.974855-05:00", "main_image": { "id": 384025, "url": "https://svs.gsfc.nasa.gov/vis/a000000/a004800/a004840/saa_intensity_comp2160_p60.4898_print.jpg", "filename": "saa_intensity_comp2160_p60.4898_print.jpg", "media_type": "Image", "alt_text": "South Atlantic Anomaly from 2015 through 2025 showing the geomagnetic intensity at the Earth's surface and the core-mantle boundary. There are versions that include the dates and colorbars and versions without the date and colorbat.This video is also available on our YouTube channel.", "width": 1024, "height": 576, "pixels": 589824 } }, { "id": 20297, "url": "https://svs.gsfc.nasa.gov/20297/", "page_type": "Animation", "title": "Magnetospheres of our Solar System", "description": "A magnetosphere is the magnetic field shields a planet against the Sun's dangerous radiation. Not all magnetospheres are alike. This animation depicts the unique magnetospheres around Earth, Mars, and Jupiter. To demonstrate their strength, each planet's magnetosphere receives a direct hit from a coronal mass ejection (CME) - a cloud of dense radiation and magnetic field from the Sun. The impact of the CME on the planet depends on the strength of the magnetosphere. On Mars, the magnetosphere is weak and patchy, resulting in some loss of the planet's atmosphere. At Earth, the magnetosphere acts as a buffer, deforming from the impact, but protecting the planet. For Jupiter, the punch of the CME is barely felt by the massive magnetic field. || ", "release_date": "2019-09-16T00:00:00-04:00", "update_date": "2023-05-03T13:45:38.848251-04:00", "main_image": { "id": 392915, "url": "https://svs.gsfc.nasa.gov/vis/a020000/a020200/a020297/H_0219_VC_Animation_Full.00600_print.jpg", "filename": "H_0219_VC_Animation_Full.00600_print.jpg", "media_type": "Image", "alt_text": "Animation of a coronal mass ejection impacting Mars, Earth, and Jupiter. Credit: NASA GSFC/CIL/Bailee DesRocher", "width": 1024, "height": 576, "pixels": 589824 } }, { "id": 4557, "url": "https://svs.gsfc.nasa.gov/4557/", "page_type": "Visualization", "title": "Leaky Radiation Belts", "description": "This visualization opens with a full view of the radiation belt of trapped electrons circling Earth. We open a slice of the belts, to display a cross-section for clarity and move the camera to a more equatorial view. 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We open a slice of the belts, to display a cross-section for clarity and move the camera to a more equatorial view. Earth rotation and solar motion have been turned off for this visualization to reduce distracting additional motions.", "width": 1024, "height": 576, "pixels": 589824 } }, { "id": 3822, "url": "https://svs.gsfc.nasa.gov/3822/", "page_type": "Visualization", "title": "Stereoscopic Magnetic Field Lines", "description": "This stereoscopic visualization shows a simple model of the Earth's magnetic field. The magnetic field partially shields the Earth from harmful charged particles emanating from the sun. The field is stretched back away from Sun by solar particle and radiation pressures.The geomagnetic field is generated (and regenerated) as the conducting fluid of the Earth's mantle and core, driven by convection of heat from deeper in the interior, induces an electromotive force (EMF) with the existing magnetic field. This process is very similar to the way an electric generator generates a voltage. That voltage then drives an induced current in the conducting fluid, which also produces a magnetic field. This feedback mechanism helps maintain the field, continuously converting the thermal energy in the Earth into magnetic field energy.The magnetic field line data used in this visualization is from a simplified static model. More complex models deform the magnetic field over time as the Earth rotates and experiences solar pressures. Many of the field lines (particulary near the back, away from the Sun) should eventually connect (north and south poles), but the 3d model used in this visualization does not extend far enough to see this.The day/night terminator is aligned with the Sun and is therefore aligned with the magnetic field too. This visualization is based on a previous monoscopic visualizaton that included magnetic field line data. || ", "release_date": "2011-02-14T00:00:00-05:00", "update_date": "2023-05-03T13:53:52.877595-04:00", "main_image": { "id": 487845, "url": "https://svs.gsfc.nasa.gov/vis/a000000/a003800/a003822/magField_anaglyph.1_print.jpg", "filename": "magField_anaglyph.1_print.jpg", "media_type": "Image", "alt_text": "Anaglyph movie of Earth's magnetic field", "width": 1920, "height": 1080, "pixels": 2073600 } } ], "products": [], "newer_versions": [], "older_versions": [], "alternate_versions": [] }