PACLIM 2007
The response of the California Margin
to Rapid Climate Change: Influences
of Changing Atmosphere and Ocean
Circulation on the Margin
Environment
Ingrid Hendy
Department of Geological Sciences
University of Michigan
Data contributed by Janine Fisler, Tim Cosma, Rick Behl, Kevin Cannariato,
Jim Kennett, Tessa Hill, Tara Ivanovich, John Crusius and more…this
presentation does not represent the viewpoints of these scientists…
What is Rapid Climate Change?
Wanted for Association with Climate Change
ODP Hole 1017E
Point Conception
Indicators of
Productivity
Conclusions
˜ Warm climate events are characterized by a dextral N.
pachyderma/G. bulloides assemblage, upwelling and low O2
intermediate waters.
˜ Cool events by a sinistral N. pachyderma/G. bulloides
assemblage and well ventilated intermediate waters.
˜ Reorganization of ocean C reservoirs impacted the Pacific
Ocean margins.
˜ Late Holocene climate change was as significant but more
complicated as glacial climate change.
˜ Climate change differences may relate to relative changes in
pressure systems versus strengthening and weakening of
systems.
˜So…..not all rapid climate change is the same….