Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/4078
AuthorsFlorindo, F.* 
De Michelis, P.* 
Piersanti, A.* 
Boschi, E.* 
TitleCould the Mw = 9.3 Sumatra Earthquake Trigger a Geomagnetic Jerk?
Issue Date22-Mar-2005
Series/Report no.12 / 86 (2005)
URIhttp://hdl.handle.net/2122/4078
KeywordsSumatra Earthquake
Geomagnetic Jerk
Subject Classification04. Solid Earth::04.05. Geomagnetism::04.05.02. Geomagnetic field variations and reversals 
04. Solid Earth::04.07. Tectonophysics::04.07.02. Geodynamics 
AbstractThe magnetic field observed at the Earth’s surface is not a stationary feature. It is characterized by time variations ranging from milliseconds (micropulsations) to millions of years (the time interval between field reversals). Time variations with periods of a year or longer are related to Earth’s outer core sources, whereas for shorter timescales an external origin is invoked (i.e., solar activity). One of the most interesting time variations of the geomagnetic field is represented by the “geomagnetic jerk.” It is idealized as a rapid change in the slope of the secular variation, defined as the first derivative of the geomagnetic field. This means that the secular variation roughly appears as a series of straightline segments separated by geomagnetic jerks.
Appears in Collections:Papers Published / Papers in press

Files in This Item:
File Description SizeFormat 
2005EO120004.pdfmain article54.37 kBAdobe PDFView/Open
Show full item record

Page view(s)

91
Last Week
0
Last month
checked on Jun 26, 2017

Download(s)

31
checked on Jun 26, 2017

Google ScholarTM

Check