HOME >> BIOLOGY >> NEWS
Sahara's edge studied from ground, air and space to improve water management

An international team worked on the verge of the Sahara to gather data on the ground and in the air, to be compared with imagery of the same region acquired by ESA satellites. The results will be used in support of an ambitious project to apply satellite remote sensing to improve monitoring and management of vast water aquifers concealed beneath the desert.

High-resolution radar as well as hyperspectral optical imagery was acquired during flights across two test areas in southern Tunisia. Meanwhile ground teams precisely documented ground vegetation and terrain at sampling sites within these test areas, with samples taken to local laboratories for detailed analysis. And ESA's Envisat, ERS-2 and Proba satellites acquired images of these sites around the same time. The aim was to scale up the findings from the ground, and at the same time to use this 'ground truth' to calibrate satellite imagery with reality on the sandy arid ground as well as seeing what can be learnt about the water beneath it.

The Sahara has altered through the ages: during the last Ice Age, 10 000 years ago, there was savannah here with rivers, lakes and plentiful rains. That landscape has vanished now, but the rains from that period progressively percolated beneath the ground to be collected in layers of water-bearing rock known as aquifers.

This 'fossil water' is today used in North African nations for irrigating agriculture and to support population growth. It is a valuable resource but also a non-renewable one - distributed across national boundaries - which requires careful management to be employed in a sustainable way. Over-exploitation risks exhaustion of groundwater, plus loss of artesian pressure to put remaining supplies out of reach or induce contamination from nearby saline water deposits.

Working with partners including African water agencies, ESA has commenced a project called Aquifer to develop satellite-derived products and services to suppo
'"/>

Contact: Mariangela D'Acunto
mariangela.dacunto@esa.int
39-069-418-0856
European Space Agency
19-Dec-2005


Page: 1 2 3 4 5

Related biology news :

1. Bacterial response to oxidation studied as toxin barometer
2. Ground spider diversity studied in research project
3. Fat stem cells being studied as option for breast reconstruction
4. Area creek studied for rangeland effects on water quality
5. Links between DNA damage and breast cancer studied
6. Inflammation and drugs to control this activity studied in a variety of tumors sites
7. Atherosclerosis studied at the cellular level
8. OT, VP studied as novel psychiatric drug sources; consider gender-specific drug models
9. Novel biotoxin being studied for use in opioid withdrawal
10. Insecticide resistance in mosquitoes being studied
11. MIT: Recycling of scrapped electronics studied

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/16/2017)... 16, 2017   Bridge Patient Portal , ... MD EMR Systems , an electronic medical ... GE, have established a partnership to build an ... the GE Centricity™ products, including Centricity Practice Solution ... These new integrations will allow healthcare delivery ...
(Date:4/19/2017)... ALBANY, New York , April 19, 2017 /PRNewswire/ ... highly competitive, as its vendor landscape is marked by ... in the market is however held by five major ... and Safran. Together these companies accounted for nearly 61% ... majority of the leading companies in the global military ...
(Date:4/13/2017)... , April 13, 2017 UBM,s Advanced Design ... will feature emerging and evolving technology through its ... Summits will run alongside the expo portion of the ... panels and demonstrations focused on trending topics within 3D ... design and manufacturing event will take place June 13-15, 2017 ...
Breaking Biology News(10 mins):
(Date:7/20/2017)... Massachusetts (PRWEB) , ... July 20, 2017 , ... ... a multi-part seminar on digital pathology and artificial intelligence Tuesday, July 25, during ... Dr. Alexander Baras from Johns Hopkins Medicine. , Baras, Associate Director of ...
(Date:7/18/2017)... ... July 18, 2017 , ... Nanomedical Diagnostics, a cutting-edge ... the launch of a new NTA biosensor chip for use with its label-free ... kinetics of polyhistidine-tagged (His-tagged) molecules quickly and reliably. , “Recombinant proteins are ...
(Date:7/18/2017)... ... July 18, 2017 , ... Blood centers traditionally see a dangerous ... Nationally, summer is a struggle for community blood centers as high schools are out ... Chamber of Commerce is teaming up with the South Texas Blood & ...
(Date:7/17/2017)... ... ... The Academy of Model Aeronautics (AMA) will host Aviation Adventure Day on ... from 9 a.m. to 2 p.m. at the International Aeromodeling Center in Muncie, Indiana. ... Day will be packed with entertaining activities for the entire family. Attendees will learn ...
Breaking Biology Technology:
Cached News: