Changes in electrical resistivity track changes in tectonic plate coupling

Autor:	Yasuo Ogawa, T. Grant Caldwell, Wiebke Heise, Edward A. Bertrand, S. L. Bennie, Graham Hill
Rok vydání:	2013
Předmět:	Coupling (electronics) Plate tectonics Resistive touchscreen East coast Geophysics Subduction Electrical resistivity and conductivity Magnetotellurics Track (disk drive) General Earth and Planetary Sciences Geology
Zdroj:	Geophysical Research Letters. 40:5029-5033
ISSN:	1944-8007 0094-8276
DOI:	10.1002/grl.50959
Popis:	[1] Interplate coupling on the Hikurangi subduction margin along the east coast of New Zealand's North Island changes north to south from almost uncoupled to locked. Clay-rich sediments and aqueous fluids at the subduction interface have been invoked as key factors in the frictional processes that control interplate coupling. Here we use magnetotelluric data to show that the subduction interface in the weakly coupled region is electrically conductive but is resistive in the locked region. These results indicate the presence of a layer of fluid- and clay-rich sediments in the weakly coupled region and support the idea that the presence of fluid and hydrated clays at the interface is a major factor controlling plate coupling.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cfa0309c858057419471a661e4a82a81 https://doi.org/10.1002/grl.50959 Zobrazit plný text záznamu Plný text