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Hsu, Shu-kun; Liu, Char-shine; Shyu, Chuen-tien; Liu, Shao-yung; Sibuet, Jean-claude; Lallemand, Serge; Wang, Chensung; Reed, Donald. |
We have compiled new free-air gravity anomaly (FAA) and magnetic anomaly maps, shedding light on the tectonics in the Taiwan-Luzon region. To have a suitable datum level for both the available gravity and magnetic anomaly data, the set of data from an ACT cruise, conducted during May 27 to June 21, 1996, was chosen as a reference. Based on the cross-over error analysis, all the other data were adjusted accordingly. Some satellite-derived, airborne or land data were also added to the compilation to obtain better coverage. Several major new insights into the Taiwan-Luzon region are revealed by the new maps. (1) A prominent NE-SW trending belt of gravity and magnetic anomalies is present in the onshore and offshore areas of southwestern Taiwan. The Peikang... |
Tipo: Text |
Palavras-chave: Free-air gravity anomaly; Bouguer anomaly; Magnetic anomaly; Transverse ridge; Fracture zone; Transform fault; Taiwan. |
Ano: 1998 |
URL: http://archimer.ifremer.fr/doc/00447/55859/58057.pdf |
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Ferron, Bruno; Mercier, Herle; Treguier, Anne-marie. |
This paper investigates the dynamics of the Antarctic Bottom Water (AABW) flow through the Romanche Fracture Zone (RFZ) in a primitive equation model with a high horizontal and vertical resolution. Two examples of Rows over simple bathymetries show that a reduced gravity model captures the essential dynamics of the primitive equation model. The reduced gravity model is then used as a tool to identify what are the bathymetric structures (sills, narrows) that mostly constrain the AABW flow through the RFZ. When only these structures are represented in the primitive equation model, the AABW how is shown to be coherent with observations (transports, density and velocity structures). |
Tipo: Text |
Palavras-chave: Circulation model; Fracture zone; Bottom water; Bathymetry. |
Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/2000/publication-802.pdf |
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