Coastal plain mapping and subsidence
Baeteman, C. (1990). Coastal plain mapping and subsidence, in: UniversiTECH 90: Remote sensing techniques and global change research. Seminar 30-31 March 1990. pp. 2
In: (1990). UniversiTECH 90: Remote sensing techniques and global change research. Seminar 30-31 March 1990. Vrije Universiteit Brussel: Brussel. 6 p. abstracts, 19 p. pp., more
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Document type: Summary
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| Abstract |
Coastal lowlands are very vulnerable areas because they are situated at or evenbelow mean sea level. These lowlands are the result of a combined action of a great number ofgeological processes and forces. This is one of the reasons why coastal lowlands arecharacterized by frequent and significant changes in lithology. Complex alternations of peat,clay, silt and sand are moreover cut by highly irregular patterns of sand -fIlled fossil channels.These specific characteristics require a proper and detailed geological mapping,yielding the three -dimensional distribution, or geometry, of the geological units. An exampleof mapping in the area of Shanghai (P.R. China) which experienced drasticallandsubsidencedue to groundwater withdrawal, will be discussed. The mapping, focussing on the need of athree -dimentional approach, was carried out in the framework of the design of a mathematicalmodel for the management of the landsubsidence. |
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