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  • 1
    Call number: AWI G8-96-0258
    In: NATO ASI series
    Type of Medium: Monograph available for loan
    Pages: XVIII, 387 S. : graph. Darst., Kt. + 1 Beil.
    ISBN: 0792335058
    Series Statement: NATO ASI series : Mathematical and Physical Sciences 463
    Branch Library: AWI Library
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  • 2
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    Am. Geophys. Union & Geol. Soc. Am.
    In:  Professional Paper, Dynamics of Passive Margins, Denver, 284 pp., Am. Geophys. Union & Geol. Soc. Am., vol. 4, no. 16, pp. 30-44, (ISBN 1-4020-1729-4)
    Publication Date: 1982
    Keywords: Plate tectonics ; Tectonics ; Geol. aspects
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  • 3
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    In:  J. Geophys. Res., Washington, D.C., AGU, vol. 76, no. B12, pp. 473-517, pp. 2568, (ISSN: 1340-4202)
    Publication Date: 1971
    Keywords: Plate tectonics ; Iceland ; Deep seismic sounding (espec. cont. crust) ; Review article ; JGR
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  • 4
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    In:  Geologisches Jahrbuch Reihe E Geophysik - geophysics, Washington, D.C., AGU, vol. 76, no. E7, pp. 85-91, pp. 2568, (ISSN: 1340-4202)
    Publication Date: 1976
    Keywords: Planetology ; moon ; Gravimetry, Gravitation
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  • 5
    Publication Date: 2017-05-06
    Description: The Traverse Gravimeter Experiment (TGE) from the Apollo 17 mission was the first and only successful gravity survey on the surface of the Moon, revealing the local gravity field at Taurus-Littrow Valley (TLV). TLV is hypothesized to be a basalt-filled graben, oriented radial to Serenitatis basin. We implemented modern 3D modeling techniques using recent high-resolution Lunar Reconnaisance Orbiter topography and image datasets to reinvestigate the subsurface structure of TLV and constrain the volcanic and tectonic history of the region. Updated topography led to significant improvements in the accuracy of free-air, Bouguer and terrain corrections. To determine the underlying geometry for TLV, we tested a range of possible thicknesses, dips and wall positions for the graben fill. We found that the thickness and position previously determined by Talwani et al. [1973] represent our preferred model for the data, but with walls with dips of 30° , rather than 90° [ Talwani et al. , 1973]. We found large model misfits due to unmodelled 3D structure and density anomalies, as well as parameter trade offs. We performed a sensitivity analysis to quantify the parameter trade-offs in an ideal future survey, assuming dominantly 2D geological structure. At the TGE survey noise level (2.5 mgal), the fill thickness was constrained to ±150 m, the wall angle to and the wall positions to ±1 km of the preferred model. This information can be used to inform the design of future lunar gravimetry experiments in regions similar to TLV.
    Print ISSN: 0148-0227
    Topics: Geosciences , Physics
    Published by Wiley on behalf of American Geophysical Union (AGU).
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  • 6
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1981-07-03
    Description: The study of oceanic crust continues to be important because of the presence of economic resources in oceanic areas and because many fundamental problems of geologic evolution are best solved from studies of the ocean. Although modeling and syntheses of existing data remain important, key breakthroughs in the future will come from the application of new technology such as multichannel towed seismic arrays, deep-towed side scan sonars, improved thermal probes, deep drilling, and satellite altimeters.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Talwani, M -- Langseth, M -- New York, N.Y. -- Science. 1981 Jul 3;213(4503):22-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17741166" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
    Publication Date: 1991-04-12
    Description: Radar imaging and altimetry data from the Magellan mission have revealed a diversity of deformational features at a variety of spatial scales on the Venus surface. The plains record a superposition of different episodes of deformation and volcanism; strain is both areally distributed and concentrated into zones of extension and shortening. The common coherence of strain patterns over hundreds of kilometers implies that many features in the plains reflect a crustal response to mantle dynamic processes. Ridge belts and mountain belts represent successive degrees of lithospheric shortening and crustal thickening; the mountain belts also show widespread evidence for extension and collapse both during and following crustal compression. Venus displays two geometrical patterns of concentrated lithospheric extension: quasi-circular coronae and broad rises with linear rift zones; both are sites of significant volcanism. No long, large-offset strike-slip faults have been observed, although limited local horizontal shear is accommodated across many zones of crustal shortening. In general, tectonic features on Venus are unlike those in Earth's oceanic regions in that strain typically is distributed across broad zones that are one to a few hundred kilometers wide, and separated by stronger and less deformed blocks hundreds of kilometers in width, as in actively deforming continental regions on Earth.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Solomon, S C -- Head, J W -- Kaula, W M -- McKenzie, D -- Parsons, B -- Phillips, R J -- Schubert, G -- Talwani, M -- New York, N.Y. -- Science. 1991 Apr 12;252(5003):297-312.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17769277" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1984-12-07
    Description: A model is proposed for the East Coast Magnetic Anomaly that, for the first time, incorporates an observed basement feature-a normal fault that consistently lies below the landward flank of the anomaly. The East Coast Magnetic Anomaly is similar to slope anomalies found over passive continental margins in many parts of the world. Thus the proposed model can be used to interpret slope anomalies in general.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alsop, L E -- Talwani, M -- New York, N.Y. -- Science. 1984 Dec 7;226(4679):1189-91.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17770989" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
    Publication Date: 2013-08-31
    Description: A new set of 1 deg x 1 deg mean free air anomalies was used to construct a gravimetric geoid by Stokes' formula for the Indian Ocean. Utilizing such 1 deg x 1 deg geoid comparisons were made with GEOS-3 radar altimeter estimates of geoid height. Most commonly there were constant offsets and long wavelength discrepancies between the two data sets; there were many probable causes including radial orbit error, scale errors in the geoid, or bias errors in altitude determination. Across the Aleutian Trench the 1 deg x 1 deg gravimetric geoids did not measure the entire depth of the geoid anomaly due to averaging over 1 deg squares and subsequent aliasing of the data. After adjustment of GEOS-3 data to eliminate long wavelength discrepancies, agreement between the altimeter geoid and gravimetric geoid was between 1.7 and 2.7 meters in rms errors. For purposes of geological interpretation, techniques were developed to directly compute the geoid anomaly over models of density within the Earth. In observing the results from satellite altimetry it was possible to identify geoid anomalies over different geologic features in the ocean. Examples and significant results are reported.
    Keywords: GEOSCIENCES (GENERAL)
    Type: NASA-CR-156859
    Format: application/pdf
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  • 10
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    Am Geophys. Un.
    In:  Washington, 354 pp., Am Geophys. Un., vol. 115, no. 1, pp. 65-66, (ISBN 3-8273-7166-X)
    Publication Date: 2000
    Keywords: Textbook of geophysics ; Geol. aspects ; Plate tectonics ; paleo ; Geomagnetics ; Deep seismic sounding (espec. cont. crust) ; Gravimetry, Gravitation
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