AGU journal highlights -- Sept. 6, 2007( the scaling between recurrence interval...)
, the scaling between recurrence interval and seismic energy released was remarkably consistent. This suggests that tectonic loading rates are likely the most important factors that control earthquake repeat times, and that a universal rule governing recurrence intervals of repeating earthquakes may possibly exist despite differences in tectonic settings.
Title:
Towards a universal rule in the recurrence interval scaling of repeating earthquakes?
Authors:
Kate Huihsuan Chen and Ruey-Juin Rau: Department of Earth Sciences, National Cheng Kung University, Tainan, Taiwan;
Robert M. Nadeau: Berkeley Seismological Laboratory, University of California, Berkeley, California, U.S.A.
Source:
Geophysical Research Letters (GRL) paper 10.1029/2007GL030554, 2007, http://dx.doi.org/10.1029/2007GL030554
6. Abrupt climate change clues in tropical African sediments
Tropical Africa, affected by both Indian and Atlantic monsoons, is responsible for much of the heat and water vapor that drives deep atmospheric convection. Noting that the relationship between this region's climate and global climate change is not well understood, Tierney et al. compare records of past climate events in tropical Africa with global paleoclimate records. The authors studied a sediment core from Lake Tanganyika, a lake on Tanzania's western border. In the Southern Hemisphere's winter, Indian Ocean monsoons interact with local winds, making southern lake habitats favorable for silica-bearing diatoms. During summer, these winds slacken as the low-pressure Intertropical Convergence Zone (ITCZ) moves southward, making lake habitats favorable for cyanobacteria. The authors analyze the concentrations of biogenic silica found in the core and notice that during known abrupt climate shifts in the Northern Hemisphere, the lake contained fewer diatoms, perhaps influenced by weakened monsoons and t
'/>"/>
| Contact: Peter Weiss pweiss@agu.org 202-777-7507 American Geophysical Union Source:Eurekalert |
Related biology news :
1. UCLA Study Shows One-Third of Drug Ads in Medical Journals Do Not Contain References Supporting Medical Claims
2. Recent breakthroughs in common adult leukemia highlighted in New England Journal of Medicine
3. Leukemia Drug Breakthrough Study In New England Journal Of Medicine
4. Open Access journals get impressive impact factors
5. Funding and bureaucracy, not access to journals, are chief obstacles to scientific productivity
6. New journal article urges use of animal serum-free media for growing live cells
7. Impressive new Impact Factors for BioMed Centrals open-access journals
8. Public Library of Science to launch new, open access journal on neglected tropical diseases
9. Are journal rankings distorting science?
10. New book highlights worlds borderless conservation areas
11. Learning to love bacteria: Stanford scientist highlights bugs benefits
| Copyright © 2003-2009 Bio-Medicine. All rights reserved. ABOUT | CONTACT US | DISCLAIMER | PRIVACY POLICY | TERMS AND CONDITIONS |  |