Results 271 to 280 of about 29,646 (296)

Characterization of volcanic geomorphology and geology by slope and topographic openness

Geomorphology, 2010
Abstract We used a digital elevation model (DEM) of Iwate Volcano, Japan to calculate slope and topographic openness for every geological unit in that area. Further, we conducted principal component analysis (PCA) and stepwise discriminant analysis (SDA) to evaluate statistical differences in the morphometric parameters of the geological units.
Oky Dicky Ardiansyah Prima, Takeyoshi Yoshida   +1 more
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Topographic Waves on Slopes

2002
Abstract : I seek to understand the influence of midlatitude jets on the surrounding ocean. The interrelations between meandering, radiation of low frequency energy and resulting mean flow generation have been of particular interest and relevance to my recent work.
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Seismic response of the Lengzhuguan slope caused by topographic and geological effects

Engineering Geology, 2020
Abstract Earthquake-induced slope failure often results in a large loss of life and property, and thus, understanding how a slope responds to seismic shaking can reveal the mechanism and movement of this kind of phenomenon. After the 2008 Wenchuan earthquake, a dense array of strong earthquake seismographs were deployed along the Lengzhuguan slope ...
Jianxian He, Shengwen Qi, Yunsheng Wang, Charalampos Saroglou   +3 more
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Evolution of a Potential Vorticity Front over a Topographic Slope

Journal of Physical Oceanography, 1991
Abstract Using the methodology of contour dynamics, the evolution of an interface separating two regions of constant potential vorticity is considered. The model equations are those for barotropic nondivergent flow over a topographic slope adjoined by a coastal barrier.
R. Grimshaw, Zengxin Yi
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Analytical and Numerical Study of a Barotropic Eddy on a Topographic Slope

Journal of Physical Oceanography, 1994
Abstract Using the nondivergent barotropic equation on an f plane, the evolution of an eddy placed on a topographic slope is studied. The theoretical analysis is in two pans. First, using the linearized equations appropriate for weak eddies it is shown that the eddy will disperse into propagating coastally trapped waves.
Roger Grimshaw, Xinyu He, Pei Sun, Dave Broutman   +3 more
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A submarine channel confluence classification for topographically confined slopes

Marine and Petroleum Geology, 2012
High-quality 3D seismic data are used in this paper to: a) investigate the geometry of Miocene–Holocene submarinechannels in confluence regions, and b) to correlate the geometry of channelconfluences with the styles of topographic confinement imposed by salt structures in the Espirito Santo Basin (SE Brazil).
Davide Gamboa, Tiago M. Alves, Joe Cartwright   +2 more
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Measurement of topographic surface slopes using polarimetric SAR images

Proceedings of IGARSS '94 - 1994 IEEE International Geoscience and Remote Sensing Symposium, 2002
A processing technique for polarimetric SAR data has been developed which produces profiles of terrain slope in the along-track (or azimuthal) direction. Using P-band data, slope profiles have been obtained for forest scattering conditions (biomass, soil moisture...) prevalent in the Black Forest near Freiburg, Germany.
D.L. Schuler, J.S. Lee, G. de Grandi
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Topographically trapped waves along the continental slope north of Svalbard

2020
<p>On the continental slope north of Svalbard, Atlantic Water is transported eastward as a part of the Arctic Circumpolar Boundary Current. As inflow of Atlantic Water through the Fram Strait is the largest oceanic heat source to the Arctic Ocean, it is important to improve our knowledge about the dynamics and processes that ...
Kjersti Kalhagen, Frank Nilsen, Ragnheid Skogseth, Ilker Fer, Zoé Koenig, Eivind Kolås   +5 more
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Topographically trapped waves over the continental shelf and slope

Journal of the Oceanographical Society of Japan, 1984
General characteristics of topographically trapped subinertia waves are discussed from the viewpoint of an eigenvalue problem and ray theory. Special attention is paid to the slope parameterS(x) (=(dh/dx)/h, wherex denotes the coordinate perpendicular to the shoreline, increasing seaward, andh(x) is the depth) which is a measure of the strength of the ...
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A Slippery Slope: Topographic Variation as an Instrument

Exploiting exogenous natural variation to study the impact of hard-to-randomize policies based on instrumental variables (IVs) is a widespread research design in economics. The key identification assumption underlying this design is the exclusion restriction, requiring the IV to affect the outcome variable only through the instrumented treatment ...
Haveresch, Nils, Ankel-Peters, Jörg, Bensch, Gunther   +2 more
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