Navigation Links
ESA satellites flying in formation
Date:12/3/2008

Based on the outstanding success of the first tandem mission between ERS-2 and Envisat last year, ESA has paired the two satellites together again to help improve our understanding of the planet.

ERS-2, ESA's veteran spacecraft, and Envisat, the largest environmental satellite ever built, both carry Synthetic Aperture Radar (SAR) instruments that provide high resolution images of the Earth's surface.

By combining two or more SAR images of the same site, slight alterations that may have occurred between acquisitions can be detected. This technique, known as SAR interferometry or InSAR, has proven to be very useful for applications such as glacier monitoring, surface deformation detection and terrain mapping.

ESA engineers configured the first SAR tandem mission, which took place from September 2007 to February 2008, and the current one, which began on 23 November, to ensure that the satellites both acquire data over the same area just 28 minutes apart.

This short time separation allows for changes that occur quickly to be detected. Fast-moving glaciers, for instance, move more than 200 m per year and can move as much as 1 cm in 30 minutes. The ability to detect these small changes occurring on the ground between acquisitions is also allowing scientists to understand better and improve the quality of the SAR interferometry technique.

The current tandem mission, scheduled to run until 27 January 2009, is continuing the work of the first tandem mission with respect to measuring the velocity of fast-moving glaciers, detecting land-ice motion and developing elevation models over flat terrain.

However, based on the first mission's proven ability to provide precise elevation information over flat regions, data from the current mission will also be used to identify natural carbon sources and sinks in Kazakh Steppe and wetlands in permafrost regions.

A challenging configuration

ESA engin
'/>"/>

Contact: Mariangela D'Acunto
mariangela.dacunto@esa.int
39-069-418-0856
European Space Agency
Source:Eurekalert

Page: 1 2

Related biology news :

1. ESA satellites focusing on the Arctic
2. Value of satellites recognized for conserving wetlands
3. Satellites helping aid workers in Honduras
4. Digital cameras, remote satellites measure crop water demand
5. Satellites illuminate pollutions influence on clouds
6. Satellites take sustainability to new heights
7. ASU researchers use NASA satellites to improve pollution modeling
8. Satellites help ensure efficient use of pesticides
9. UNCCD recognizes importance of satellites for combating desertification
10. Satellites witness lowest Arctic ice coverage in history
11. Researchers uncover worlds oldest fossil impression of a flying insect
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/21/2014)... Growers of annual bedding plant seedlings or plugs ... a large stem diameter and high root dry ... during shipping and transplant. To achieve these desirable ... on supplemental lighting from high-pressure sodium lamps during ... diodes (LEDs) can give greenhouse growers other lighting ...
(Date:7/21/2014)... their cells are stressed when facing temperature extremes. Worse ... in the cell are slowed down more than others, ... of whack. Yet, those cells manage to keep their ... Rochester and the European Molecular Biology Laboratory have found ... of proteins is a key process in all cells, ...
(Date:7/20/2014)... A study of 473 sets of twins followed since ... of 24-month-old identical twins had language delay compared to ... the rate of late language emergence of single-born children. ... , The results of the study were published in ... Hearing Research . , University of Kansas Distinguished ...
Breaking Biology News(10 mins):LEDs shine in bedding plant production study 2When temperatures get cold, newly-discovered process helps fruit flies cope 2Large twin study suggests that language delay due more to nature than nurture 2Large twin study suggests that language delay due more to nature than nurture 3
... things that exist underground, plant roots are out-of-sight and ... plant parts are more familiar, plant roots are equally ... crop, and dazzling ornamental lies a root system that ... for plants, extract water and nutrients from soil, and ...
... Since the terrorist attacks of 2001, the Bureau of ... water and power to millions of people, has invested ... protect its facilities and personnel, says a new report ... better communication among security staff, regional and area office ...
... WI, AUGUST 18, 2008 Serpentine soils contain highly ... farming. Successful management of serpentine soils requires accurate measurement ... in the Soil Science Society of America Journal ... accurately measure calcium content in serpentine soils. To ...
Cached Biology News:Getting to the root of the matter 2National Research Council report on security at federally managed dams 2National Research Council report on security at federally managed dams 3
(Date:7/22/2014)... Dr. Williams says, “Bush has joined ... that the greatest health care system in the world ... deadly while trying to serve the public. Unfortunately, Bush ... transform an enormous system that none of them can ... continuing series of Open Letters ( http://is.gd/wdU2CM ) provides ...
(Date:7/21/2014)... Applying just the right amount of tension to a ... metallic conductor to an insulator, according to Rice University ... a hard-to-make, one-dimensional chain of carbon atoms -- by ... in ways that engineers might find useful for mechanically ... Rice theoretical physicist Boris Yakobson and his colleagues appears ...
(Date:7/21/2014)... , July 21, 2014  Mike Patterson, CEO ... $1.6 million in Series Seed B funding to ... sensors for the life science, defense, intelligence, and ... Partners led the round and was joined by ... Said Patterson , "This round of funding ...
(Date:7/20/2014)... Richland, Wash. -- When nuclear fuel gets recycled, the ... uranium in rock contaminates basements with the related gas ... these gases, and research appearing July 20 in ... let the gases in but not out. , ... or hazardous radioactive elements from nuclear fuel or air ...
Breaking Biology Technology:Dr. Ira Williams Asks What’s Wrong With Jonathan Bush’s Book, Where Does It Hurt? 2Carbyne morphs when stretched 2Carbyne morphs when stretched 3Global Graphene Manufacturing Leader, Graphene Frontiers, Receives Series Seed B Funding To Assure Production Of The Next Generation Of Biological And Chemical Sensor Technology 2A noble gas cage 2A noble gas cage 3
... N.J., Nov. 4 Cambrex,Corporation (NYSE: CBM ) reports third ... (Logo: http://www.newscom.com/cgi-bin/prnh/20000613/CAMBREXLOGO ), -- Sales increased ... third quarter 2007. -- Adjusted EBITDA for the quarter was ... $9.7 million last year. -- Debt, net of cash was ...
... - Oncolytics Biotech Inc.,("Oncolytics") (TSX:ONC, NASDAQ:ONCY) announced ... pursue a pivotal (Phase II/III) randomized trial ... refractory,patients with head and neck cancers. The ... by the Company,s Board of Directors from ...
... Md., Nov. 4 PharmAthene, Inc.,(NYSE Alternext US: ... and chemical threats, announced today,that David P. Wright, ... at the Rodman and Renshaw 10th Annual Healthcare ... beginning at 2:25 p.m. E.T. in the,Holmes II ...
Cached Biology Technology:Cambrex Reports Third Quarter 2008 Results 2Cambrex Reports Third Quarter 2008 Results 3Cambrex Reports Third Quarter 2008 Results 4Cambrex Reports Third Quarter 2008 Results 5Cambrex Reports Third Quarter 2008 Results 6Cambrex Reports Third Quarter 2008 Results 7Cambrex Reports Third Quarter 2008 Results 8Cambrex Reports Third Quarter 2008 Results 9Cambrex Reports Third Quarter 2008 Results 10Cambrex Reports Third Quarter 2008 Results 11Cambrex Reports Third Quarter 2008 Results 12Cambrex Reports Third Quarter 2008 Results 13Cambrex Reports Third Quarter 2008 Results 14Oncolytics Biotech Inc. Announces Decision to Pursue Phase II/III Pivotal Clinical Trial 2