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Jesper Bartholdy
(f. 1951) Lektor ved Institut for Geovidenskab
og Naturforvaltning, Københavns Universitet.
Kandidat (1979) og ph.d. (1983) begge
fra Københavns Universitet. Indtil 1989
adjunkt ved Geografisk Institut, Københavns
Universitet,
Visiting Scientist
ved Skidaway
Institute of Oceanography i Georgia, USA i
1989 og siden 1989 Lektor ved Københavns
Universitet. Har publiceret adskillige artikler
og bidrag til bøger vedr. sedimenttransport
og morphodynamik i strømmende vand. Har
især forsket i Vadehavet, vandløbene der
leder til Vadehavet og i sydeuropæiske floder.
Noter
1
Klægflædning er navnet på den supervoksende marskflade, der ligger på nord-
siden af Varde Ås udløb i Ho Bugt.
2
Bartholdy og Madsen 1985.
3
Bartholdy et al. 2005.
4
Nielsen 1935.
5
Bartholdy et al. 2010.
Litteraturliste
• Bartholdy, A.T., Bartholdy, J., Kroon, A.:
Salt marsh stability and patterns of sedimentation
across a backbarrier platform. Marine Geology 278 2010, s. 31-42.
• Bartholdy, J., Pedersen, J.T., Sørensen, T.H.:
Hedeselskabet Miljø og Energi. Budgetter
for akkumulering af tungmetaller i Grådyb, Knude Dyb og Juvre Dyb tidevandsområder.
Report to the counties Ribe and Sønderjylland 2005. ISBN: 87-7941-790-6.
• Bartholdy, J. & Madsen, P.P.: Accumulation of Fine-Grained Material in a Danish Tidal
Area.
Marine Geology,
Vol. 68, 1985, s. 121-137.
• Pedersen, J.B.T., Svinth, S., Bartholdy, J.: Holocene evolution of a drowned melt-water
valley in the Danish Wadden Sea.
Quaternary Research
72 2009, s. 68-79.
• Nielsen, N.:
Eine Methode zur Exakten Sedimentationsmessung
. Det Kongelige Danske
Videnskabernes Selskab XII, 1935.
Summary
Salt marsh consists of peat and/or fine grained sediment. As the
salt marsh in the Danish Wadden Sea is in constant growth, it
is possible to dig down and find old salt marsh surfaces which
can tell us about conditions related to the marsh in the past.
There are several methods which enable us to date these old
salt marsh surfaces (
14
C, OSL,
210
Pb and sedimentation models)
by means of these, it has been possible to reconstruct the land-
scape evolution in the lower part of the Varde Å valley since the
rising ocean reached this former melt water valley about 8.000
years ago. Likewise it has been possible to reconstruct a local
sea level rise curve for the area. From more recent times it has
been possible to find evidence for a local pollution with mercury
from the chemical plant “Grindstedværket” in the hinterland of
the river Varde Å. It took place in the middle of the 20
th
Century
up to around 1970. Also the global pollution with
137
Cs has been
documented in the salt marsh with clear peeks related to the 2
nd
world war, the nuclear boom tests culminating around 1963 and
the Chernobyl nuclear catastrophe in 1986.
Modsatte side:
Varde Ådal december 2007.