Navigation Links
'House hunters walrus'
Date:12/14/2012

Walrus use sea ice as a reproductive, migration and resting habitat. However, as sea ice melts and recedes, this marine mammal increasingly is threatened.

A University of Delaware research team, led by Chandra Kambhamettu, professor of computer and information sciences, has developed a novel camera system to map the surface topography of Arctic sea ice. The effort is part of a collaborative National Science Foundation project involving scientists at UD, the University of Virginia and the University of Alaska, Fairbanks, to assess walrus habitat.

Scott Sorensen, a doctoral student at UD, returned from a two-month expedition aboard the German research vessel Polarstern in October. He installed three cameras aboard Polarstern to continuously capture images of the sea ice during the expedition. He and fellow doctoral student Rohith Kumar designed the camera system in UD's Video/Imaging Modeling and Synthesis Laboratory (VIMS). The team is now using the raw data to reconstruct polar ice floes in 3-D. Dense reconstruction

Walrus gather in large herds of up to 10,000 animals in the heavy ice of the central Bering Sea in winter and migrate to the Chukchi Sea of Russia and Alaska in spring. During the summer, the sea ice melts and recedes into the Arctic Basin.

Sorensen explains that walruses move slowly on land, and if the ice floes are too large, they are at risk for predators such as polar bears. Too small and the ice will not support the walrus' weight.

"Without good metric data about ice floes and sea ice thickness, among other things, we can't really classify habitat," Sorensen says.

Ice, however, is very hard to reconstruct in 3-D because it is white and has no visual texture. Researchers typically rely on correspondences between pictures to recreate an image in 3-D, but determining what pixels correspond between two white images is nearly impossible.

"There is good data from satellites that use infrar
'/>"/>

Contact: Andrea Boyle Tippet
aboyle@udel.edu
302-831-1421
University of Delaware
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Majority of Americans doubt Congress and White House can avoid fiscal cliff
2. New study: Many flame retardants in house dust -- unsafe levels
3. Agriculture & food production contribute up to 29 percent of global greenhouse gas emissions
4. Smart growth strategies curb car use, greenhouse gas emissions, SF State study suggests
5. Destroyed coastal habitats produce significant greenhouse gas
6. No more sneezing, allergen-free house plants
7. No more sneezing, allergen free house plants
8. Chemical exposure in the womb from household items may contribute to obesity
9. House funding bill will delay research progress and place new burdens on NIH
10. Carnegie Mellon Universitys Biometrics Center Selected To House New Pedo-Biometrics Research and Identity Automation Lab
11. Caution needed with new greenhouse gas emission standards
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
'House hunters walrus'
(Date:6/25/2015)... According to a new ... Area), Technology, Material (Optical Prism, Piezoelectric, Capacitive & ... Others) & Geography - Global Forecast to 2014 ... is expected to reach $14,500.07 Million by 2020, ... Browse 76 market Tables and 109 Figures spread ...
(Date:6/24/2015)... , June 24, 2015  Synaptics Inc. ... human interface solutions, today announced that Sharp has ... provide secure authentication for its latest flagship smartphone ... more than 200 million shipments of its fingerprint ... reinforces Synaptics, strength, scalability and leadership in the ...
(Date:6/23/2015)...   Valencell, a leader in performance ... recent study that illustrates its PerformTek biometric technology ... In a study conducted at Valencell,s Biometric Lab, ... Apple Watch against a chest strap – the ... The study demonstrated that Valencell,s biometric technology delivers ...
Breaking Biology News(10 mins):Fingerprint Sensors Market Worth $14,500.07 Million by 2020 2Fingerprint Sensors Market Worth $14,500.07 Million by 2020 3Fingerprint Sensors Market Worth $14,500.07 Million by 2020 4Synaptics Brings Natural ID Technology to Sharp's Newest Flagship Smartphone 2Valencell Delivers Breakthrough Heart Rate Accuracy on the Wrist 2Valencell Delivers Breakthrough Heart Rate Accuracy on the Wrist 3
... is an inherited eye disorder characterized by progressive loss ... blindness at the end stage. , In a ChIP-Seq ... of the transcription factor Crx (Cone-rod homeobox) in the ... genetic basis for visual perception. In-depth analysis of Crx ...
... ATLANTA, Ga. Nov. 18, 2010 The 2010 Golf ... to benefit research aimed at finding better treatments and eventually ... 124 players Oct. 15, 2010, to the Crabapple Golf Club ... support the Translational Genomics Research Institute (TGen), a non-profit biomedical ...
... mysterious link between bones of an ancient lizard found in ... the Komodo dragon, half a world away in Indonesia. ... shape of the vertebrae links the 33-million-year-old African lizard fossil ... for some 700,000 years. , "The African fossil was ...
Cached Biology News:Transcription factor scan identifies genetic cause for inherited blindness 2Golf Atlanta charity tournament raises $105,000 for TGen research 2Researchers link an African lizard fossil in Africa with the Komodo dragon in Indonesia 2
(Date:6/26/2015)... , June 26, 2015  A San Francisco ... products made with synthetic rhino horn: beer in ... Vietnam . In response to the emerging ... manufacture, marketing and sale of synthetic rhino horn.  ... and Save the Rhino International (SRI) released ...
(Date:6/26/2015)... ... June 26, 2015 , ... Claremont BioSolutions, LLC, a ... been integrated into a sample prep module intended to enable real-time quantitative gene ... the NASA’s WetLab-2 Project. , On June 28, 2015, SpaceX CRS-7 will launch ...
(Date:6/26/2015)... , ... June 26, 2015 , ... ... services and a subsidiary of OraSure Technologies, Inc. (Nasdaq: OSUR) today announced that ... as part of its Gut Microbiome Grant Program. The company has awarded its ...
(Date:6/26/2015)... (PRWEB) , ... June 26, 2015 , ... ReliantHeart, ... that indicates that from the first implant of the HeartAssist5® LVAD (HA5) to the ... the HA5. , Thrombus that originates in an LVAD is referred to as ...
Breaking Biology Technology:Rhino Experts Oppose Synthetic Rhino Horn as Solution to Poaching Crisis 2Claremont BioSolutions’ SimplePrep™ Products Deployed in NASA Wetlab-2 Project Slated for June 28th Flight to International Space Station aboard SpaceX CRS-7 2Claremont BioSolutions’ SimplePrep™ Products Deployed in NASA Wetlab-2 Project Slated for June 28th Flight to International Space Station aboard SpaceX CRS-7 3DNA Genotek Inc. Announces Recipients of Gut Microbiome Grant Program 2DNA Genotek Inc. Announces Recipients of Gut Microbiome Grant Program 3HeartAssist5® Remote Monitoring has alerted no patterns of de novo thrombus in 68 consecutive implants 2HeartAssist5® Remote Monitoring has alerted no patterns of de novo thrombus in 68 consecutive implants 3
... Those who attended the BIO2003 Conference in Washington D.C. ... experience. First, it was attended by over 16,000 people ... filled with dignitaries such as President Bush, Secretary Tommy ... though, the conference showcased the efforts of research scientist ...
... freeze budget proposal? Legislative Republicans voted for it because they ... convinced the freeze was good policy and secretly hoped Doyle ... Democrats and Gov. Jim Doyles proposal to raise the state ... vote for such a populist bill if it reaches the ...
... Reviving the Economy , ,* * * * * * ... from last week's DEMOmobile 2003, and the experience has only strengthened ... the overall economy. The energy from the 400-plus attendees and 37 ... crystal clear: True connectivity -- both in our homes and our ...
Cached Biology Technology:Let's Get Serious 2Doyle and the Legislature Have Much To Agree Upon When It Comes To The Economy 2Doyle and the Legislature Have Much To Agree Upon When It Comes To The Economy 3The News From DEMOmobile 2003 2The News From DEMOmobile 2003 3
... PTOs are internucleotide modifications, where one ... replaced by a sulphur atom. This modification ... are available as Full-PTOs ... with thio-caps Several internucleotide ...
... The VARIOKLAV 75 S and 135 S steam ... double bottoms combine the advantages of a double-walled ... use, effective deaeration and drying by built-in jacket ... - fast cooling. The chamber is free of ...
Request Info...
... catalyzes the transfer of the gamma-phosphate ... single- and double-stranded DNA, RNA, and ... the 3'-phosphate from 3'-phosphoryl polynucleotides, deoxyribonucleoside ... form a 3'-hydroxyl group. Storage Buffer: ...
Biology Products: