C14 radiocarbon dating
- Mean Sea Level can also be seen as an expression of the Geoid. The Geoid is the shape that the surface of the oceans would take under the influence of Earth's gravitation and rotation alone, in the absence of other influences such as winds and tides. Bremer Von der Geoarchäologie über die Küstendynamik zum Küstenzonenmanagement Coastline Reports 9 (2007), ISSN 0928-2734, ISBN 978-3-9811839-1-7 S. As Rahmstorf (2011) puts it: To trace the subtle variations of sea level of the last two millennia, more precise methods are required than for the huge and rapid rise of sea level during the first half of the Holocene. This problem has given rise to a rather large number of studies of Medieval sea level change (see the Publications list at the end of the site). A new Late Holocene sea-level record from the Mississippi Delta: evidence for a climate/sea level connection? references are given to papers on sea level change in the Middle Ages (500-1500 AD) and the Little Ice Age (LIA; approximately 1450-1850 AD) that can be viewed online. First, some preliminary remarks are given: - What is Mean Sea Level (MSL)? ________________________________________________________________________________________________________________________ See also the critical comments on Behre's sea level curve for the southern North Sea (2003, 2004, 2007) by Baeteman, Waller and Kiden (2011) and Bungenstock and Weerts (2010, 2012), and Behre's response (2012). Sea-level rise during the last 2000 years as recorded on the Frisian Islands (the Netherlands). Baeteman, Waller and Kiden (2011) conclude that the high-amplitude middle and late Holocene sea-level fluctuations identified by Behre (2003, 2007) are highly unlikely to be real features of the sea-level history of the southern North Sea. In: Coastal Studies on the Holocene of the Netherlands (editors D.
- Local or regional Mean Sea Level may differ from place to place or from one area to the next area, e.g.
However: tide gauges may move vertically as a result of movements of the earth's crust, such as post-glacial rebound, tectonic uplift or crustal subsidence.
This greatly complicates the problem of determining global sea level change from tide gauge data (From: Tide gauge sea level).
- Since the ending of the last Ice Age sea level has risen by about 120 m.
During the Holocene (the past 10.000 years) the last 35 m of rise have occurred. Grinsted - Publications in pdf-format Hanisch, Jörg, 1980.
Therefore, Mean Sea Level cannot simply be found by subtracting a fixed amount from MHT.