The New Jersey margin scientific drillig project (IODP Expedition 313): Unstangling the record of global and local sea-level changes
Résumé
Much of the world is currently experiencing shoreline
retreat due to global sea level rising at the rate of 3–4 mm yr -1.
This rate will likely increase and result in a net rise to roughly
1 m above present sea-level by the year 2100 (e.g., Rahmstorf,
2007; Solomon et al., 2007), with significant consequences
for coastal populations, infrastructures, and ecosystems.
Preparing for this future scenario calls for careful study of
past changes in sea level and a solid understanding of
processes that govern the shoreline response to these
changes. One of the best ways to assemble this knowledge is
to examine the geologic records of previous global sea-level
changes. Integrated Ocean Drilling Program (IODP)
Expedition 313 set out to do this by recovering a record of
global and local sea-level change in sediments deposited
along the coast of eastern North America during the Icehouse
world of the past 35 m.y. What we learn from this record—the
factors driving sea-level changes, and the impact of this
change on nearshore environments—will help us understand
what lies ahead in a warming world.
Domaines
Stratigraphie
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...