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Transition zone thickness beneath Indonesia as inferred using the receiver function method for data from the JISNET regional broadband seismic network
Author(s) -
Saita Tomoharu,
Suetsugu Daisuke,
Ohtaki Toshiki,
Takenaka Hiroshi,
Kanjo Kenji,
Purwana Ibnu
Publication year - 2002
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2001gl013629
Subject(s) - receiver function , geology , classification of discontinuities , seismology , transition zone , subduction , broadband , passive seismic , induced seismicity , mantle (geology) , crust , seismic array , geophysics , lithosphere , tectonics , mathematical analysis , mathematics , political science , law
We analyzed broadband waveforms recorded by the newly deployed Japan‐Indonesia Seismic Network to determine the depths of the 410 km and 660 km discontinuities and thickness of the mantle transition zone beneath Indonesia by the receiver function method. The discontinuities have an undulation with a maximum difference of 40 km with respect to the Iasp91 model. The thickness of the transition zone is well correlated with seismicity and seismic velocity anomalies, suggesting that the topography is caused by temperature anomalies associated with the subducted slabs beneath Indonesia.