Continuous near-bottom gravity measurements made with a BGM-3 gravimeter in DSVAlvinon the East Pacific Rise crest near 9°31′N and 9°50′N
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چکیده
منابع مشابه
Upper Crustal Resistivity Structure of the East Pacific Rise near 13 N
_Abstract. An active source electromagnetic (EM) sounding has been conducted on the axis of the East Pacific Rise (EPR) at 13 ø 10 •N. 1D inversion and modelling techniques, seeking resistivity as a function of depth, have been applied to 8 Ilz amplitude data collected along the ridge crest. Resistivity is seen to increase monotonically between 50 m and 1 km below the seafloor, increasing from ...
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Bushehr Bay is situated along the northern Iranian coasts of the Persian Gulf, between 28°52΄ and 29°5΄ north latitude and 50°42΄ and 50°52΄east longitude. In this study COHERENS, which is a threedimensional hydrodynamic model, was employed to simulate surface and under surface currents in the Bushehr Bay. The atmospheric forces and four main tidal constituents M2, S2, K1, O1 and also boundary ...
متن کاملSeismic heterogeneity in the upper crust eruption site on the East Pacific Rise , 9 ø 50 ' N near the 1991
We report the results of a small-aperture uppercrustal tomography experiment conducted on the East Pacific Rise near 9ø50'N, the site of a volcanic eruption in 1991. The experiment geometry comprised 3 ocean bottom seismometers and 491 airgun shots fired in a 16 x 16 km 2 area. Twoand three-dimensional inversions indicate that the average upper crustal velocities, both on and off axis, increase...
متن کاملPerformance of Mid-rise Buildings with Tubular Structure Under the Effect of Near Field Earthquakes
The aim objective of this study is to investigate the effects of near-field earthquakes on the response of mid-rise buildings with tubular structure. For this purpose, a 20-story building with a square plan of six by six bays, all with 6 m span, and story height of 3.70 m is considered. Axial force of columns, shear lag, and inter-story drift values are used as the main response parameters. N...
متن کاملFine Structure of an Oceanic Crustal Section near the East Pacific Rise by D. v. Helmberger and G. Engen
In this study we model synthetically a complete seismic profile of roughly 20m.y.-old crust located to the west of the East Pacific Rise, 3.37S, 114.13W. The results indicate a rather strong velocity gradient below the sediments with little evidence of layering in the upper crust and a slightly dipping oceanic layer. The crust-to-mantle transition zone appears sharp providing a relatively good ...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Solid Earth
سال: 1999
ISSN: 0148-0227
DOI: 10.1029/1999jb900049