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CHANGES IN OCEAN LEVEL
AND ALBEDO OF POLAR ICE CAPS
M.R. BLOCH1Palaeogeography
, Palaeoclimatology, PalaeoecologyElsevier
Publishing Company, Amsterdam-Printed in The NetherlandsA
HYPOTHESIS FOR THE CHANGE OF OCEAN LEVELSDEPENDING
ON THE ALBEDO OF THE POLAR ICE CAPSM.R.
BLOCHThe Negev Institute
for Arid Zone Research, Beersheva (Israel)(Received
October 6, 1964)(Resubmitted
January 27, 1965)SUMMARYThe
eustatic changes of the ocean in pre-historic
and historic times arerecognized
as erratic and steep. A hypothesis is proposed
to explain theseerratic
changes with albedo changes of the polar ice caps, caused in turn byerratic
volcanic and terrestrial dust fall-out. Ash layers in Antarctic ice cores
areconnected with historic
dislocations of salt production on ocean coasts and ofmaritime
civilizations.Albedo
changes through the dusting of the ice caps are proposed to be the causefor
the decline glaciation periods generally. Such albedo changes are connectedwith
volcanic activity on the one hand, and loess formation on the other, causedin
turn by the growth of the ice caps.