Publication Date:
2017-04-04
Description:
Abstract
Instrumental records indicate that ocean volumes during the 20th century have increased so as to raise eustatic sea level by
f1–2 mm/year and the few available records suggest that this is higher than for the previous century. Geological data indicate
that ocean volumes have increased since the main phase of deglaciation about 7000 years ago but whether this continued into
the recent past remains unclear. Yet, this is important for establishing whether the recent rise is associated with global warming
or is part of a longer duration non-anthropogenic signal. Here, we present results for sea-level change in the central
Mediterranean basin for the Roman Period using new archaeological evidence. These data provide a precise measure of local
sea level of 1.35F0.07 m at 2000 years ago. Part of this change is the result of ongoing glacio-hydro isostatic adjustment of
the crust subsequent to the last deglaciation. When corrected for this, using geologically constrained model predictions, the
change in eustatic sea level since the Roman Period is 0.13F0.09 m. A comparison with tide-gauge records from nearby
locations and with geologically constrained model predictions of the glacio-isostatic contributions establishes that the onset of
modern sea-level rise occurred in recent time at f100F53 years before present.
D 2004 Elsevier B.V. All rights reserved.
Description:
Published
Description:
(563-575)
Description:
reserved
Keywords:
Mediterranean
;
recent eustatic change
;
04. Solid Earth::04.04. Geology::04.04.04. Marine geology
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
Format:
612944 bytes
Format:
application/pdf
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