Geoid anomalies across Pacific fracture zones
نویسندگان
چکیده
منابع مشابه
Convection Beneath Young Oceanic Lithosphere: Implications for Thermal Structure and Gravity
Small-scale convection under the oceanic lithosphere which begins in the first 5 m.y. of cooling can produce a gravity signal with the amplitude and wavelength observed for large areas of the central Pacific and southern Indian oceans using Seasat altimeter data. The trend of the observed anomalies is parallel to the direction of plate motion as might be expected if they were produced by small-...
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[1] The association between local maxima in the geoid and subduction zones is examined. While it is well known that subduction zones are associated with broad local maxima in the geoid at spherical harmonic degrees 4–9, there is an impressive correlation between back arc geoid maxima at the 5000 km length scale (i.e., spherical harmonic degrees >9) and subduction zones with the exception of the...
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Geoid anomalies over the Pacific plate show lineated undulations approximately oriented in the direction of absolute plate motion. Conventional spectral analyses have revealed a broad range of dominant wavelengths, but as filtering is direction-dependent, results are difficult to interpret. Here, we present a new approach designed to quantify the correlation between the geoid undulations and Pa...
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ژورنال
عنوان ژورنال: Geophysical Journal International
سال: 1988
ISSN: 0956-540X,1365-246X
DOI: 10.1111/j.1365-246x.1988.tb01385.x