Navigation Links
Seafloor, sea-level, shear zones, subduction, sedimentation, and seismology
Date:1/14/2014

th the conjugate margins of the northern Red Sea. Such a pattern is consistent with a pure shear model of extension, and suggests that the greater amounts of uplift and volcanism on the eastern side of the Red Sea compared to the western side may be the result of deeper flow in the mantle associated with the African superplume and not directly a consequence of the rifting process.


Incipient sediment motion across the river to debris-flow transition
Jeff P. Prancevic et al., California Institute of Technology, Division of Geological and Planetary Sciences, 1200 E. California Boulevard, MC 170-25, Pasadena, California 91125, USA; jprancev@caltech.edu. Posted online 10 January 2014, http://dx.doi.org/10.1130/G34927.1.

River channels steeper than 5% grade make up most of the drainage network in mountainous landscapes and are the source of devastating debris flows, yet little work has been done to understand how and when sediment moves in these channels. Jeff P. Prancevic and colleagues conducted a series of experiments in a laboratory model river to identify the critical conditions for sediment motion in steep channels and whether this motion occurs as normal river transport of single grains or en masse failure of a collection of grains. In their experiments, normal river transport becomes progressively less effective at moving sediment with increased grade and gives way to en masse failure at about 40% grade. This transition is predicted well by previous models that depend on the respective Mohr-Coulomb friction angles of individual grains and a collection of grains. Use of these models and knowledge of friction angles allows us to predict where the process transition is likely to occur in natural rivers, aiding efforts to mitigate damage by debris flows and improving our understanding of how mountains erode.



'/>"/>
Contact: Kea Giles
kgiles@geosociety.org
Geological Society of America
Source:Eurekalert

Page: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

Related biology news :

1. Seismic zones, river deltas, landslides, fossil reptiles, and more new Geology science
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/11/2015)... --Research and Markets ( http://www.researchandmarkets.com/research/3p32qm/access_control ) has ... by Product, Application & By Geography - Global Forecast ... , This report predicts that the access ... 2020, with an estimated CAGR of 10.6%. ... such as contact cards & readers, contactless cards & ...
(Date:3/10/2015)... 2015 Transforming How We Look ... Medicine in Human Space Flight" by Michael ... , Ph.D. was recently featured by Springer Science Media, highlighting ... Specifically, "Personalized Medicine in Human Space Flight" ... in 2013 and 2014 from Springer in the journal ...
(Date:3/5/2015)... 5, 2015 In Brazil , ... already using these solutions and 42 percent planning to invest ... approximately 25 percent of the companies will be investing in ... majority of companies in the region are currently opting for ... model will command significant attention in the coming years. This ...
Breaking Biology News(10 mins):Global Access Control (Cards & Readers, Biometrics, Controllers, Management Software) Market 2015-2020 - Analysis of the $10 Billion Market 2"Personalized Medicine in Human Space Flight" Listed Among Most Influential Papers of 2013 and 2014 2Two of Every Three Brazilian Companies will have Invested in Cloud by 2015, Finds Frost & Sullivan 2Two of Every Three Brazilian Companies will have Invested in Cloud by 2015, Finds Frost & Sullivan 3Two of Every Three Brazilian Companies will have Invested in Cloud by 2015, Finds Frost & Sullivan 4
... at an alarming rate compared with other species, according to ... The rate of extinctions increased noticeably after 1950, although ... of extinct species has grown by 25 percent since 1989. ... US Geological Survey, examines North American freshwater fish extinctions from ...
... 2012 Scientists already know that the tiny hairs on ... vertical surfaces. Now, University of Akron researchers are unfolding clues ... to create a synthetic adhesive that sticks when moist or ... the sole of a gecko toe, and the pad repels ...
... along the ground by alternately squeezing and stretching muscles ... each wave of contractions. Snails and sea cucumbers also ... our own gastrointestinal tracts operate by a similar action, ... the stomach. Now researchers at MIT, Harvard University ...
Cached Biology News:Gecko feet hold clues to creating bandages that stick when wet 2Soft autonomous robot inches along like an earthworm 2Soft autonomous robot inches along like an earthworm 3
(Date:3/26/2015)... SAN DIEGO , March 26, 2015  BioNano ... the appointment of  Terry Salyer as chief commercial ... building highly effective, worldwide sales teams in life sciences. ... Irys ® System, a genome-mapping platform to assemble ... and investigate structural variations. To date, 32 institutions located ...
(Date:3/26/2015)... March 26, 2015 PAREXEL International ... clinical research organization , announced today ... agreement to acquire all of the business ... leading provider of specialized pharmacovigilance services, based ... collection, detection, assessment, monitoring, and prevention of ...
(Date:3/26/2015)... Ale Gicqueau, Founder and President of Clinovo, ... at Align Technology, on “ Conducting Postmarket Registries - ... Global Conference and Exhibition on April 25th through April ... the poster presentation, Ale Gicqueau and Victor Chen will ... Registry, the requirements and resources to conduct the registry, ...
(Date:3/25/2015)... 2015 Agnition announced today that it ... Farmer, airing for the first time at 7:30 a.m. ... Farmer will explore the extremely important role soil microbes ... a patented Microbial Catalyst™ technology that enhances soil and ... segment will air again on April 28. , A ...
Breaking Biology Technology:BioNano Genomics Appoints Terry Salyer as Chief Commercial Officer 2BioNano Genomics Appoints Terry Salyer as Chief Commercial Officer 3PAREXEL Announces Execution of Definitive Agreement to Acquire Quantum Solutions India, Strengthening Leadership In Pharmacovigilance Services 2PAREXEL Announces Execution of Definitive Agreement to Acquire Quantum Solutions India, Strengthening Leadership In Pharmacovigilance Services 3PAREXEL Announces Execution of Definitive Agreement to Acquire Quantum Solutions India, Strengthening Leadership In Pharmacovigilance Services 4Clinovo Presents at ACRP 2015 in Salt Lake City, Utah on April 25th-28th 2Clinovo Presents at ACRP 2015 in Salt Lake City, Utah on April 25th-28th 3Agnition to be Featured In Upcoming Episode of American Farmer on RFD-TV 2
... L.P., a subsidiary of Mylan Inc. (Nasdaq: ... market and distribute EMSAM(R) in the U.S. EMSAM, a ... which was approved by the U.S. Food and Drug ... depressive disorder. EMSAM previously was marketed and distributed by ...
... digital templating solution from Orthocrat. Using TraumaCad, UPMC Mercy,s ... within the UPMC enterprise. , ... ... today that UPMC Mercy, part of the UPMC global health ...
... 28 Cytopia Limited (ASX: CYT) announced that it will present ... CYT997, at the Annual Meeting of the American Society of Clinical ... clinical investigators for the program, will be presenting the poster in ... Therapeutics - Vascula ...
Cached Biology Technology:Dey L.P. to Market EMSAM(R) Skin Patch for Treatment of Major Depressive Disorder 2Orthocrat Announces Successful Implementation of TraumaCad at UPMC Mercy 2Orthocrat Announces Successful Implementation of TraumaCad at UPMC Mercy 3Oral VDA CYT997 - Phase I Clinical Trial Presentation at ASCO 2
Affinity Purified Rabbit Anti-mouse sRANKL Biotinylated Polyclonal Antibody...
Mouse anti-IkBa/MAD-3 Class: Antibody Product Group: Signalling molecules and phospho-specific Antibody...
Mouse monoclonal [002-49] to C1s ( Abpromise for all tested applications). entrezGeneID: 716 SwissProtID: P09871...
Goat polyclonal to HSPC150 ( Abpromise for all tested applications). entrezGeneID: 29089...
Biology Products: