September Geology and GSA Today media ...(Short-term changes in seafloor character...)

Date:8/28/2007

Short-term changes in seafloor character due to flood-derived hyperpycnal discharge: Typhoon Mindulle, Taiwan, July 2004
J.D. Milliman, College of William and Mary, School of Marine Science, Gloucester Point, VA 23062-1346, USA; et al. Pages 779-782.

Torrential rains associated with typhoon Mindulle in early July 2004 caused the Choshui River in western Taiwan to discharge to the Taiwan Strait more than 70 million tons of sediment in three daysabout half the annual amount discharged by the Mississippi River to the Gulf of Mexico. Seismic and sedimentological data obtained before and after the typhoon indicate that the sediment was first deposited adjacent to the river mouth and then re-suspended and deposited as a discontinuous band of mud along northwestern Taiwan. Within one month most of the mud had been eroded (most likely transported northward by the Taiwan Warm Current), suggesting that although the immediate impact of floods off coastal Taiwan is considerable, flood-related deposits may last only a few weeks.

---

Highstand fans in the California borderland: The overlooked deep-water depositional systems
Jacob A. Covault, Stanford University Geological and Environmental Sciences, Stanford, California 94305-2115, USA; et al. pages 783-786.

Sediment and pollutants are brought to oceans by rivers and transported through the coastal zone. Early work suggested that transport of material to deep-marine basins is less important during interglacial periods of high sea level, such as at present. Covault et al.s work offshore Southern California, however, shows that the amount of sediment transported to deep-marine basins is approximately constant regardless of sea level, but the pathways of transport are different.

---

Quantitative model for magma degassing and ground deformation (bradyseism) at Campi Flegrei, Italy: Implications for future eruptions
Robert J. Bodnar, Virginia Polytechnic Insititute,
'/>"/>

Contact: Ann Cairns acairns@geosociety.org 303-357-1056 Geological Society of America Source:Eurekalert

0 GOOD

Page: 1 2 3 4 5 6 7 8 9 10 11 12
Related biology news :

1. Great White shark evolution debate involves WSU Lake Campus geology professor
2. Team of international scientists departs today to discover the unknown in Chinas Himalayan region
3. Todays babies are fatter babies
4. Gene sequencing explains bioremediation bug
5. FDA Warns Consumers Not to Use Home-Use Diagnostic Kits Marketed by Globus Media
6. Activation of thermoreceptors mediates raw garlics burning pungency
7. A hope for oil spill bioremediation
8. Leading scientists rank endangered dolphins, porpoises most in need of immediate action
9. Several minute intermediate stage in virus-cell fusion discovered; opportunity for drug development
10. HIV accessory protein disables host immunity via receptor-protein intermediary
11. New journal article urges use of animal serum-free media for growing live cells