Options
The geodynamic meaning of the great Sumatran earthquake: Inferences from short time windows
Language
English
Status
Published
Peer review journal
Yes
Title of the book
Issue/vol(year)
n.35 (June), 2005
Publisher
NCGT Newsletter
Pages (printed)
8-23
Issued date
June 1, 2005
Subjects
Abstract
The difference between the value of seismic moment computed using the surface wave data and the value
derived from the normal modes of the Earth requires reinterpretation of the focal mechanism of the Great Sumatran Earthquake (TU=26 December 2004 - 00h 58m, Lat=3.3°N, Lon=95.8°E, H=30 km, M=9.3) based on the second conjugate – near vertical CMT fault plane solution. The displacement of the Earth’s instantaneous rotation pole – observed at ASI of Matera, Italy –, the seismic data (USGS) in the two days following the main shock, the high frequency P-wave radiation, the geomorphologic data, and the satellite data of uplift/subsidence of the coasts (IGG) converge toward this interpretation. A thorough revision or a complete overcoming of the subduction concept is then needed.
derived from the normal modes of the Earth requires reinterpretation of the focal mechanism of the Great Sumatran Earthquake (TU=26 December 2004 - 00h 58m, Lat=3.3°N, Lon=95.8°E, H=30 km, M=9.3) based on the second conjugate – near vertical CMT fault plane solution. The displacement of the Earth’s instantaneous rotation pole – observed at ASI of Matera, Italy –, the seismic data (USGS) in the two days following the main shock, the high frequency P-wave radiation, the geomorphologic data, and the satellite data of uplift/subsidence of the coasts (IGG) converge toward this interpretation. A thorough revision or a complete overcoming of the subduction concept is then needed.
Type
article
File(s)
No Thumbnail Available
Name
Sumatra short time windows NCGTjune05(35).pdf
Size
1.49 MB
Format
Adobe PDF
Checksum (MD5)
f1443a8d12b0d50c5d7261ba99566b92