HOME >> BIOLOGY >> NEWS
Earth from Space: unique Arctic landscape surveyed by Proba

This Proba image shows the region around Samoylov Island, located within the Lena River Delta on the Laptev Sea coast of Northern Siberia. The small pear-shaped island of Samoylov in the lower middle of the image is one of the Delta's more than 1 500 individual islands.

The Lena Delta, covering an area of about 32 000 square kilometres, is a haven for Arctic wildlife that transforms for five months each summer from frozen tundra to fertile wetlands. The Delta is located at the end of the 4400-km-long course of the Lena River, one of the longest rivers in the world. It is an important breeding ground for many migratory birds and supports diverse populations of fish and several marine mammals.

The largest Delta in the Arctic, the Lena Delta is a complex landscape that has evolved over thousands of years. The Holocene (the geological era extending back from the present to the last 10 000 years) Delta incorporates parts of an older accumulation plain, dating as far back as the mid-to-late Pleistocene Era. Samoylov Island is located in the central southern part of the Lena Delta, close to the Delta apex. Covering an area of 1200 hectares, it is representative of the active and the Holocene part of the Delta, estimated to back about 7000 years.

Various geomorphological levels can be distinguished in the image. The highest terraces in the image are determined by typical wet ice-wedge polygonal tundra with numerous ponds and small lakes, presenting a Mid Holocene deltaic accumulation surface of frozen fluvial permafrost deposits (dark green colours). Two lower levels are formed by Late Holocene fluvial processes (light green colours) and by recent shallow and very active sandbars (whitish colours).

All terraces undergo heavy changes in terms of river bank erosion, island migration or thermal erosion. Another interesting feature is the presence of river ice on some sandbanks in the lower right of the scene, which remained from the spring ri
'"/>

Contact: Mariangela D'Acunto
mariangela.dacunto@esa.int
39-694-180-856
European Space Agency
5-Aug-2005


Page: 1 2

Related biology news :

1. What we can learn from the biggest extinction in the history of Earth
2. Chickens also orient themselves by the Earths magnetic field
3. Scientists ponder plant life on extrasolar Earthlike planets
4. NASA-funded robotic sub makes final dive to reach bottom of Earths deepest sinkhole
5. ESA presents the sharpest ever satellite map of Earth
6. 3.2 billion-year-old surprise: Earth had strong magnetic field
7. Prototype space probe prepares to explore Earths deepest sinkhole
8. Worlds oldest rocks show how Earth may have dodged frozen fate of Mars
9. Climate change only one symptom of a stressed planet Earth
10. Researchers identify a heartbeat in Earths climate
11. Symposium Changes on Earth honors Yale Geologist Robert Berner

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Earth from Space unique Arctic landscape surveyed Proba

(Date:5/11/2015)... 11, 2015  Through a well-rounded UAS delegation representing private ... a strong showing at AUVSI,s Unmanned 2015 conference last week ... Ohio,s UAS industry met with over 200 ... points along the UAS ecosystem. "Our message ... President for Aerospace Rich Knoll . "If you want ...
(Date:5/8/2015)... JOSE, Calif. , May 8, 2015 Synaptics ... interface solutions, today announced that members of the executive management ... J.P. Morgan 43rd Annual Technology, Media and Telecom Conference ... Waterfront Hotel in Boston, MA ... May 27, 2015 Time: 2:45pm ET Location: The New York ...
(Date:5/5/2015)... , May 5, 2015, NXT-ID, Inc. (NASDAQ: ... focused on the growing mobile commerce market, reminds investors and ... Technology Officer, is presenting  at CARTES SECURE CONNEXIONS AMERICA 2015, ... 2015. The three-day conference is organized into ... speaking in is themed Global Fraud: Where is the ...
Breaking Biology News(10 mins):Ohio Flies High at Unmanned '15, Sets Stage for Ohio UAS Conference 2Synaptics to Present at Upcoming Investor Conferences 2NXT-ID, Inc.'s CTO, David Tunnell, Presents at CARTES SECURE CONNEXIONS AMERICA 2015 Today in Washington DC. 2NXT-ID, Inc.'s CTO, David Tunnell, Presents at CARTES SECURE CONNEXIONS AMERICA 2015 Today in Washington DC. 3
(Date:5/22/2015)... 2015 According to a new ... 2D Gel Electrophoresis, Agarose & Polyacrylamide Gel, Capillary Electrophoresis, ... Application & by End User - Global Forecast to ... to reach around $1.98 Billion by 2020 with a ... 2020. Browse 226 ma rket ...
(Date:5/21/2015)... Seventh Wave Laboratories, a consulting-based contract ... pharmaceutical products and medical devices, announced the purchase of ... 50,000 sq. ft. building more than three times the ... Facility renovations will begin immediately and the gradual transition ... in September. , “We are excited about this ...
(Date:5/21/2015)... , May 21, 2015  The EveryLife Foundation ... (R-UT) and Amy Klobuchar (D-MN) ... Accelerating Cures & Treatments, or OPEN ACT. ... patient advocacy organizations, this bipartisan legislation promises to ... medicines to rare disease patients by incentivizing drug ...
(Date:5/21/2015)... As part of its philanthropic partnership with Banner ... funded a $3.25 million project to relocate and equip ... up-to-date features and technology. , The new pharmacy is ... members will begin moving from the current location to ... , The current pharmacy has been using a ...
Breaking Biology Technology:Electrophoresis Market Worth $1.98 Billion by 2020 2Electrophoresis Market Worth $1.98 Billion by 2020 3Electrophoresis Market Worth $1.98 Billion by 2020 4Seventh Wave Laboratories Purchases Building for Expansion, Upcoming Move 2Seventh Wave Laboratories Purchases Building for Expansion, Upcoming Move 3Advocates Cheer Senate Leaders for Introducing Bipartisan Bill to Increase Number of Rare Disease Treatments 2Sun Health Foundation Provides $3.25M to Expand, Relocate Banner Del E. Webb Medical Center Pharmacy 2Sun Health Foundation Provides $3.25M to Expand, Relocate Banner Del E. Webb Medical Center Pharmacy 3
Cached News: