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Planetary Geodynamics Laboratory

Planetary Geodynamics Laboratory

Two Columns

Geomagnetism

Laboratory staff involved in geomagnetism studies

image of Mike Purucker image of Terry Sabaka
Mike
Purucker (STX)		 Terry
Sabaka
image of Pat Taylor image of Coerte Voorhies image of Kumar Hemant
Pat
Taylor		 Coerte
Voorhies		 Kumar
Hemant

Comprehensive Field Models

Comprehensive field model figure ionospheric currents figure

Comprehensive field models show the difference in the Earth's magnetic field between AD 2000 (Oersted epoch) and AD 1980 (Magsat epoch) (left) and ionospheric currents over time (right). (Sabaka et al., Geophys.J Int., 2002)

Crustal Anomaly Sudies

magnetic model figure
magnetic model figure magnetic model figure

Crustal anomaly studies include a global magnetization model (M. Purucker) and a regional magnetization model for the Kursk iron-ore region (P. Taylor) (above, bottom), a susceptibility model for the Antarctic (HR Kim, below, top) and for the region of the recent Sumatra earthquake (M. Purucker, above, top). Estimates for high heat flow based on a magnetic model correlate well with regions of known volcanism and ice streams in Antarctica (below, bottom, M. Purucker, Science).

magnetic model figure magnetic model figure
heat flow figure

Flight Mission Support

in-flight calibration figure SWARM mission figure

Flight mission support includes in-flight calibration of the SAC-C vector magnetometer (left) and simulation studies for the future SWARM mission (right), using the Comprehensive Model (T. Sabaka and M. Purucker).

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