Conveners:
Suzanne Anderson, CSIDE, Dept. of Earth Sciences, UCSC, Santa Cruz, CA
95064, spa [at] es.ucsc.edu
Dan Lawson, CRREL-Anchorage, PO Box 5646, Fort Richardson, AK 99505,
dlawson [at] crrel.usace.army.mil
James Syvitski, INSTAAR, Campus Box 450, University of Colorado,
Boulder, CO 80309, james.syvitski [at] colorado.edu
Guidelines for abstract submission or information about other
meetings/sessions taking place during the AGU Fall Meeting from
10-14 December 2001 can be found at the AGU web site at:
Dear Colleague,
We are convening a special session at the Fall AGU 2001 Meeting in San
Francisco, 10-14 December 2001 entitled:
IP04: Glacial Sediment Systems from Source to Sink
Conveners:
Suzanne Anderson, CSIDE, Dept. of Earth Sciences, UCSC, Santa Cruz, CA
95064, spa [at] es.ucsc.edu
Dan Lawson, CRREL-Anchorage, PO Box 5646, Fort Richardson, AK 99505,
dlawson [at] crrel.usace.army.mil
James Syvitski, INSTAAR, Campus Box 450, University of Colorado,
Boulder, CO 80309, james.syvitski [at] colorado.edu
Abstract Deadline by mail: 30 August 2001
Abstract Deadline for electronic submisions: 6 September 2001, 1400 UTC
(The first author must be a current AGU member)
Special Session Abstract:
Temperate glaciers can have enormous impacts on sediment delivery to
continental margins. Alaskan glaciers, for example, have among the
highest sediment yields measured anywhere, and sediment accumulation
rates off-shore are commensurately high. Glacial and non-glacial
processes produce and transport sediment through glacierized basins, and
these processes interact in important ways. Large rockfalls onto
glaciers can change their mass balance; glacial retreat removes support
from over-steepened valley walls; outburst floods ream near-glacier
valleys and deposit large quantities of material further downstream.
Because the hydrology of a glacial river differs from non-glacial
rivers, glacial cycles will produce times of varying sediment delivery
and transport capacity that will be manifested in deposits throughout
the basin. At the shoreline, deltas and nearshore zones are commonly
areas of rapid sedimentation, leading to unstable conditions and slope
failures. Off-shore areas receive pulses of sediment from such failures,
as well as large quantities of materials deposited from suspension.
We seek papers on the direct effect of glaciers and their processes of
erosion, transport and deposition, particularly addressing rates of
sediment delivery during normal and catastrophic events, sediment
transport in glacial streams, deltas and the off-shore zone, and the
relationship of sediment transport from one environment to another. We
also seek papers on the indirect impacts of glaciers that are linked to
glacial processes such as isostatic response, time lags in sediment
delivery due to temporary storage, and the response of hillslopes to
glacial cycles. The nature of sediment deposition from source to sink
including rate and preservation, and the nature of the resulting
sediment pile including the recognition of a glacial signal are welcome
from both on-shore and off-shore perspectives.
Conveners:
Suzanne Anderson, CSIDE, Dept. of Earth Sciences, UCSC, Santa Cruz, CA
95064, spa [at] es.ucsc.edu
Dan Lawson, CRREL-Anchorage, PO Box 5646, Fort Richardson, AK 99505,
dlawson [at] crrel.usace.army.mil
James Syvitski, INSTAAR, Campus Box 450, University of Colorado,
Boulder, CO 80309, james.syvitski [at] colorado.edu
Guidelines for abstract submission or information about other
meetings/sessions taking place during the AGU Fall Meeting from
10-14 December 2001 can be found at the AGU web site at: