Work

Polynomial modelling of CHAMP satellite data to investigate rapid secular variation fluctuations over southern Africa during 2003 and 2004

Year: 2012

Type: article

Abstract: Polynomial surface modelling is one of several useful methods to represent the geomagnetic field over a restricted area. This technique was applied to CHAMP satellite data for the period 2001–2005 to investigate rapid secular variation fluctuations at 400 km altitude over southern Africa region between 10° and 40° South in latitude and between 10° and 40° East in longitude. The results are compared with an analysis of monthly time series data of 2 magnetic observatories in the region, namely, Hermanus (HER) in South Africa and Tsumeb (TSU) in Namibia. Consequently 2 rapid secular variation fluctuations are identified around 2003.0 and 2004.0 respectively.

Source: Earth Planets and Space

DOI: 10.5047/eps.2012.03.001

Authors: E. Nahayo, P. B. Kotzé

Institution: South African National Space Agency

Language: English

Topic: Geomagnetism and Paleomagnetism Studies

Subfield: Geophysics

Field: Earth and Planetary Sciences

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $1,640

Funders: Bundesministerium für Bildung und Forschung, Deutsches Zentrum für Luft- und Raumfahrt