Title: Paleo-pole positions from martian magnetic anomaly data

Author(s): Frawley JJ, Taylor PT

Source: ICARUS 172 (2): 316-327 DEC 2004

Document Type: Article

Language: English

Abstract: Magnetic component anomaly maps were made from five mapping cycles of the Mars Global Surveyor's magnetometer data. Our goal was to find and isolate positive and negative anomaly pairs which would indicate magnetization of a single source body. From these anomalies we could compute the direction of the magnetizing vector and subsequently the location of the magnetic pole existing at the time of magnetization. We found nine suitable anomaly pairs and from these we computed paleo-poles that were nearly equally divided between north, south and mid-latitudes. These results suggest that during the existence of the martian main magnetic field it experienced several reversals and excursions. (C) 2004 Elsevier Inc. All rights reserved.

Author Keywords: Mars; data reduction techniques geophysics; magnetic fields

KeyWords Plus: MARS; FIELD; REGION

Addresses: Frawley JJ (reprint author), Herring Bay Geophys, 440 Fairhaven Rd, Tracys Landing, MD 20779 USA
Herring Bay Geophys, Tracys Landing, MD 20779 USA
NASA, Goddard Space Flight Ctr, Geodynam Branch, Greenbelt, MD 20771 USA

E-mail Addresses: hbgjjf@ltpmailx.gsfc.nasa.gov

Publisher: ACADEMIC PRESS INC ELSEVIER SCIENCE, 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA

Subject Category: ASTRONOMY & ASTROPHYSICS

IDS Number: 882AH