Physics
Scientific paper
Sep 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005eostr..86..343d&link_type=abstract
Eos, Transactions American Geophysical Union, Volume 86, Issue 38, p. 343-343
Physics
1
Geodesy And Gravity: Global Change From Geodesy (1222, 1622, 1630, 1641, 1645, 4556), Geomagnetism And Paleomagnetism: Time Variations: Diurnal To Decadal, Geodesy And Gravity: Earth Rotation Variations
Scientific paper
In a recent issue of Eos, Florindo et al. [2005] suggest that large seismic events, such as the magnitude 9.3 Sumatra earthquake of 26 December 2004, may cause changes in topography at the core-mantle boundary (CMB), thereby affecting flow in the core. They hypothesize that this effect may trigger a geomagnetic jerk, which would be observed at Earth's surface after a time delay to allow for the signal to propagate through the weakly conducting mantle. However, they do not provide any estimates of the amplitude or form of the CMB topography changes that are required, or of the actual CMB deformation that may have occurred as a result of the Sumatra event. Here, I argue that it is unlikely that large earthquakes can lead to geomagnetic jerks.
No associations
LandOfFree
Comment on ``Could the M w = 9.3 Sumatra Earthquake Trigger a Geomagnetic Jerk?'' does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Comment on ``Could the M w = 9.3 Sumatra Earthquake Trigger a Geomagnetic Jerk?'', we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Comment on ``Could the M w = 9.3 Sumatra Earthquake Trigger a Geomagnetic Jerk?'' will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1282932