Tomography reveals buoyant asthenosphere accumulating beneath the Juan de Fuca plate
نویسندگان
چکیده
منابع مشابه
Wiring the Juan de Fuca Plate for Science: The Neptune System
NEPTUNE will wire the Juan de Fuca Plate in the northeast Pacific Ocean. It will enable in-depth study of life in extreme environments, plate tectonics, oceanography, and fisheries, to name but a few of the many topics. This will be accomplished by means of a multi-node submarine fiber-optic/power cable network deployed around the plate. It will provide power for the instrumentation as well a...
متن کاملThe fate of the Juan de Fuca plate: Implications for a Yellowstone plume head
Beneath the Pacific Northwest the Juan de Fuca plate, a remnant of the Farallon plate, continues subducting beneath the North American continent. To the east of the Cascadia subduction zone lies the Yellowstone Hotspot Track. The origins of this track can be traced back to the voluminous basaltic outpourings in theColumbia Plateau around 17Ma. If these basalts are the result of a largemelting a...
متن کاملEvidence for both crustal and mantle earthquakes in the subducting Juan de Fuca plate
[1] We investigate the relationship between high-precision hypocentres in the subducting Juan de Fuca plate beneath southwest British Columbia, and the velocity structure from receiver function analysis and reflection seismic data. 108 earthquakes at depths of 40 to 65 km were relocated using a double-difference algorithm to obtain precise earthquake locations. Correlation of the relocated seis...
متن کاملJuan de Fuca subduction zone from a mixture of tomography and waveform modeling
[1] Seismic tomography images of the upper mantle structures beneath the Pacific Northwestern United States display a maze of high-velocity anomalies, many of which produce distorted waveforms evident in the USArray observations indicative of the Juan de Fuca (JdF) slab. The inferred location of the slab agrees quite well with existing contour lines defining the slab’s upper interface. Syntheti...
متن کاملDirectionality of Ambient Noise on the Juan de Fuca Plate: Implications for Source Locations of the Primary and Secondary Microseisms
Based on cross-correlations of ambient seismic noise computed using 61 ocean bottom seismometers (OBSs) within the Juan de Fuca (JdF) plate from the Cascadia Initiative experiment and 42 continental stations near the coast of the western United States, we investigate the locations of generation of the primary (11–20 s period) and secondary (5–10 s period) microseisms in the northern Pacific Oce...
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ژورنال
عنوان ژورنال: Science
سال: 2016
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.aad8104