Using electromagnetic waves originating in the ionosphere and magnetosphere, conductivity profiles reaching the deep upper mantle show surprising variability in water content.
Geomagnetic induction
Posted inScience Updates
Taking Magnetotelluric Data out of the Drawer
Magnetic and electric field measurements at Earth’s surface provide information on Earth’s interior and on space weather. An open-source central repository of these data has received a major update.
Posted inEditors' Highlights
Mapping Extreme-Value Geoelectric Fields
To help mitigate magnetic storm interference on electric power grid operations, extreme-value geoelectric fields have been mapped across the mid-Atlantic United States.
Posted inResearch Spotlights
Mapping Geoelectric Hazards Across the United States
Variations in Earth’s magnetic field can induce electric fields in the ground, driving damaging currents through our power grids.
Posted inScience Updates
Making the Northern Indian Ocean a Hub of Geomagnetic Data
A new initiative seeks to unite and network the magnetic research community in the northern Indian Ocean region.
Posted inResearch Spotlights
Scientists Watch Solar Winds Blast Mercury's Magnetic Field
A NASA team used the MESSENGER spacecraft to analyze Mercury's magnetosphere during intense solar wind pressure.