Pre-Quaternary sea-level changes: records and processes
نویسندگان
چکیده
منابع مشابه
Quaternary coastal morphology and sea-level changes—an introduction
Few things remain static in natural systems and perhaps no better illustrated than by changes in the level of the ocean surface with respect to the land over Quaternary timescales. The position of sea level (ultimate base level) and changes of sea level over geological timescales represent important controls in the evolution of coastal environments, and as an agent of profound geomorphological ...
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The islands of northeast Fiji studied are all the emergent parts of the northern end of the Lau^Colville Ridge, a remnant island arc which has been rising for most of the Quaternary. Within the study area, investigations of coastal landforms (primarily emerged notches and shore platforms) and emerged coral reefs allow rates of tectonic movements to be calculated. The Vanuabalavu Island group is...
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Past sea level changes are reconstructed by geological means. Present relative sea level changes are recorded by geodetic means. In order to estimate possible future changes in sea level, we have to use the past as a key to the future. Ice melting and water heating are two processes that may lead to a present sea level rise. Both factors are controlled by strict physical processes. After the la...
متن کاملEstimating future sea level changes from past records
In the last 5000 years, global mean sea level has been dominated by the redistribution of water masses over the globe. In the last 300 years, sea level has been oscillation close to the present with peak rates in the period 1890–1930. Between 1930 and 1950, sea fell. The late 20th century lack any sign of acceleration. Satellite altimetry indicates virtually no changes in the last decade. There...
متن کاملLate Quaternary Eustatic Sea-Level Changes Along TheMalibu Coast, Los Angeles County, California
Late Quaternary relative sea-level changes along the Malibu coast can be deciphered by study of geomorphic features and marine and associated stream deposits. Evidence for such changes includes (a) stream downcutting in large valleys during low stands of sea level, (b) stream aggradation in the same valleys during high stands of sea level, and (c) marine shoreline angles whose altitudes coincid...
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ژورنال
عنوان ژورنال: Basin Research
سال: 2008
ISSN: 0950-091X,1365-2117
DOI: 10.1111/j.1365-2117.2008.00365.x