Results 221 to 230 of about 3,226 (261)

The gravity field and crustal thickness of Venus

Science China Earth Sciences, 2014
The gravity and topography of Venus obtained from observations of the Magellan mission, as well as the gravity and topography from our numerical mantle convection model, are discussed in this paper. We used the hypothesis that the geoid of degrees 2–40 is produced by sublithospheric mantle density anomalies that are associated with dynamical process ...
DaiYun Wei, An Yang, JinShui Huang
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Variation of crustal thickness in Borneo and Sulawesi

2022
<p>The Southeast Asia (SEA) region is tectonically very active as it accommodates the northward movement of the Indo-Australian plate in the south and the westward movement of the Philippine Sea plate in the east. Borneo and Sulawesi are located in the centre of SEA, which is our area of interest.
Harry Telajan Linang, Amy Gilligan, Jennifer Jenkins, Simone Pilia, Tim Greenfield, Nicholas Rawlinson, Pepen Supendi, Felix Tongkul, Sri Widiyantoro   +8 more
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New crustal-thickness results for Fennoscandia

Geologiska Föreningen i Stockholm Förhandlingar, 1981
Abstract The spectral ratio technique of Phinney, R. A., 1964: Structure of the earth's crust from spectral behavior of long period body waves (Journal of Geophysical Research 69, 29973017) has been used for estimating crustal thickness beneath 11 Fennoscandian seismograph stations equipped with three-component long period instruments.
Eystein S. Husebye, Hilmar Bungum
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Crustal thickness and the forms of impact craters

Journal of Geophysical Research, 1971
Most impact craters with flat lavalike floors are attributed to (1) hypervelocity impact piercing a floating crust and admitting liquid magma to the crater floor or (2) impacts that pierce a solid crust with sufficient energy to relieve the load on high-temperature material held in a solid state, so that it melts and partially fills the crater.
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A new global crustal thickness map

Tectonics, 1982
An up‐to‐date global compilation of crustal thickness and Pn velocity values from published seismic refraction and surface wave data has been created. From 297 referenced sources, a total of 2508 crustal thickness and 1806 Pn velocity values have been selected. This represents a significant expansion of previous compilations.
David R. Soller, Richard D. Ray, Richard D. Brown   +2 more
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Crustal-thickness variations in the central Andes

Geology, 1996
We estimated the crustal thickness along an east-west transect across the Andes at lat 20°S and along a north-south transect along the eastern edge of the Altiplano from data recorded on two arrays of portable broadband seismic stations (BANJO and SEDA).
Susan L. Beck, George Zandt, Stephen C. Myers, Terry C. Wallace, Paul G. Silver, Lawrence Drake   +5 more
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Crustal thickness estimates for the western Himalaya

1989
The main collision between the Indian and Asian lithospheric plates occurred during late Eocene time (40 to 50 m.y. ago). Continued northward migration of the Indian plate since that time at the rate of 5 cm/yr has resulted in approximately 2,000 km of closure between the two plates.
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Crustal thickness variation in south-central Alaska

Geology, 2006
Crustal thicknesses have been determined by receiver function analysis of broadband teleseismic waveforms recorded during the Broadband Experiment Across the Alaska Range (BEAAR). Typical crust beneath the northern lowlands is 26 km thick, while beneath the mountains it is 35–45 km thick.
Elizabeth Veenstra, Douglas H. Christensen, Geoffrey A. Abers, Aaron Ferris   +3 more
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Crustal thickness patterns in the Australian continent

2003
The crust-mantle boundary is defined seismologically by the Mohorovicic discontinuity (or Moho), where the velocity of seismic waves increases from typical crustal values to typical mantle values. The depth of the Moho beneath Australia has been mapped using all available seismic data in order to study the crustal thickness patterns and their ...
C. D. N. COLLINS, B. J. DRUMMOND, M. G. NICOLL   +2 more
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Crustal thickness of Egypt determined by gravity data

Journal of African Earth Sciences, 1997
The observed Bouguer gravity anomalies of Egypt and surrounding areas have been analysed in terms of the gravity field components due to the lower crust-upper mantle interface (Moho). Band-pass filtering of the observed field in the wavelength band 300 < Λ < 700 km has been assumed to be related to the variable crustal thickness of the area.
DORRE A. S, CARRARA E, CELLA, Federico, GRIMALDI M, Y. A. HADY, HASSAN H, RAPOLLA A, ROBERTI N.   +7 more
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