Geomagnetism

Time 2020-12-17 17:07:57

Web Name: Geomagnetism

WebSite: http://geomag.usgs.gov

ID:137267

Keywords:

Geomagnetism,

Description:

We monitor the Earth's magnetic field. Using ground-based observatories, we provide continuous records of magnetic field variations; disseminate magnetic data to various governmental, academic, and private institutions; and conduct research into the nature of geomagnetic variations for purposes of scientific understanding and hazard mitigation.Keeping the Lights On in North AmericaRealtime geoelectric maps during a magnetic storm can assist utility companies with their operations and can help power-grid managers to make decisions that may minimize the impact to their systems.Read the story.Risk of Once-Per-Century Geomagnetic Superstorm in NE United StatesA new report and map published by the U.S. Geological Survey provides critical insight to electric power grid operators across the northeastern United States in the event of a once-per-century magnetic superstorm.Read the story.Auroras and Earthquakes: Strange CompanionsIn a win-win situation for both seismologists and space physicists, a cheapmagnetometer at aseismic station can result in better seismic data for earthquakes and also more geomagnetic data in real time for monitoring space weather.Read the story. We introduce the USGS Natural Hazards newsletter. In this issue: A new geonarrative about the 2019 Ridgecrest earthquake, Potential landslide in Alaska, Subduction Zone Science, Post-wildfire debris flow assessments, new @USGS_Quakes Twitter account, Mapping faults in Puerto Rico, Coastal Change Top Story, Photo Round Up and more! In a win-win situation for both seismologists and space physicists, a cheap magnetometer at a seismic station can result in better seismic data for earthquakes and also more geomagnetic data in real time for monitoring space weather.Read the new Science for Everyone article: Auroras... On May 10, Gavin Hayes takes on the role of Senior Science Advisor for Earthquake and Geologic Hazards within the USGS Natural Hazards Mission Area.  The Senior Science Advisor serves as the coordinator for the Earthquake Hazards, Global Seismographic Network, and Geomagnetism Programs and provides oversight and guidance across the full breadth of USGS geohazard-related activities. Year Published: 2020 Simultaneous observations of geoelectric and geomagnetic fields produced by magnetospheric ULF waves Geomagnetic perturbations (BGEO) related to magnetospheric ultralow frequency (ULF) waves induce electric fields within the conductive Earth—geoelectric fields (EGEO)—that in turn drive geomagnetically induced currents. Though numerous past studies have examined ULF waveBGEOfrom a space weather perspective, few studies have linked ULF... Hartinger, M. D.; Shih, X. R.; Lucas, G.; Murphy, Benjamin Scott; Kelbert, Anna; Baker, J.B.H.; Rigler, E. Joshua; Bedrosian, Paul A. Attribution: Geologic Hazards Science Center, Natural Hazards, Geomagnetism Program, Region 7: Upper Colorado Basin Year Published: 2020 Geomagnetism Program research plan, 2020–2024 The Geomagnetism Program of the U.S. Geological Survey (USGS) monitors geomagnetic field variation through operation of a network of observatories across the United States and its territories, and it pursues scientific research needed to estimate and assess geomagnetic and geoelectric hazards. Over the next five years (2020–2024 inclusive) and in... Love, Jeffrey J.; Kelbert, Anna; Murphy, Benjamin S.; Rigler, E. Joshua; Lewis, Kristen A. Attribution: Central Energy Resources Science Center, Geologic Hazards Science Center, Natural Hazards, Energy Resources Program, Geomagnetism Program, Region 7: Upper Colorado Basin View Citation Love, J.J., Kelbert, A., Murphy, B.S., Rigler, E.J., and Lewis, K.A., 2020, Geomagnetism Program research plan, 2020–2024: U.S. Geological Survey Circular 1469, 19 p., https://doi.org/10.3133/cir1469. Year Published: 2020 Adjusted geomagnetic data—Theoretical basis and validation Adjusted geomagnetic data are magnetometer measurements with provisional correction factors applied such that vector quantities are oriented in a local Cartesian frame in which the X axis points north, the Y axis points east, and the Z axis points down. These correction factors are determined from so-called absolute measurements, which are “ground... Rigler, E. Joshua; Claycomb, Abram E. Attribution: Geologic Hazards Science Center, Natural Hazards, Geomagnetism Program, Region 7: Upper Colorado Basin View Citation Rigler, E.J., and Claycomb, A.E., 2020, Adjusted geomagnetic data—Theoretical basis and validation: U.S. Geological Survey Open-File Report 2020–1053, 19 p., https://doi.org/10.3133/ofr20201053.

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