Navigation Links
Highlight of the Polarstern expedition
Date:7/29/2010

This release is available in German.

Bremerhaven, 26th July 2010. The Alfred Wegener Institute for Polar and Marine Research in the Helmholtz Association for the first time sent its Autonomous Underwater Vehicle (AUV) on an under-ice mission at about 79 North. The four-metre-long, torpedo shaped underwater vehicle was deployed from the research icebreaker Polarstern under heavy pack ice. The vehicle was subsequently recovered by helicopter.

"We are one of the world's first working groups to have successfully carried out such an under-ice mission, a goal we have been working hard to achieve," says Dr. Thomas Soltwedel, the chief scientist of the expedition. "The samples and data obtained will shed a new light on phytoplankton production in the transition area between the permanently ice-covered Arctic Ocean and its ice-free marginal zone. Autonomous underwater vehicles are opening up new possibilities to investigate the ice-covered polar seas - areas that are of pivotal importance in climate research."

The underwater vehicle reaches a maximum depth of 3000 metres. It can travel a total distance of 70 kilometres at an average speed of five to six kilometres per hour. The planned course, desired depth and surfacing position are all entered into the AUV's computer before deployment. The vehicle then carries out its mission independently, with no connection to the research vessel.

The autonomous submersible of the Alfred Wegener Institute was equipped with various measuring instruments, which continuously recorded and stored temperature and salinity data during the hour-long dive. A light sensor captured the photosynthetically active radiation in the surface layer of the ocean. A so-called fluorometer continuously recorded the distribution of micro-algae along the vehicle's track. A newly developed sampling system collected 22 water samples at discrete time intervals, for later analysis.

The research vessel Polarstern is on its 25th Arctic expedition. The current cruise leg began in Longyearbyen (Spitsbergen) on the 30th June and will end in Reykjavik (Iceland) on the 29th July. Fifty scientists carried out long-term biological studies and oceanographic measurements for numerous national and international projects in the so-called HAUSGARTEN and in the Fram Strait. The HAUSGARTEN of the Alfred Wegener Institute is a long-term deep-sea observatory, which the scientists have set up to investigate the reactions of the marine Arctic ecosystem to global climate change.

The third leg, which is planned to carry out geoscience research in the northern Baffin Bay (Canada), begins in Reykjavik on the 31st July. Polarstern is expected back in Bremerhaven on the 10th October 2010.


'/>"/>

Contact: Margarete Pauls
medien@awi.de
49-047-148-311-180
Helmholtz Association of German Research Centres
Source:Eurekalert

Related biology news :

1. July 2010 Geology and GSA Today highlights
2. 5-year report highlights status of Washingtons forest resources
3. Public lecture at UC Riverside to highlight Californias environment
4. Cancer health disparities research highlighted at AACR 101st Annual Meeting 2010
5. Selected highlights of the research being presented at the Experimental Biology 2010 meeting
6. Study highlights forest protected areas as a critical strategy for slowing climate change
7. Leading toxicologists highlight advances to safeguard public health
8. Emerging science, tech advances highlight new NIH Common Fund programs
9. Society of Interventional Radiology highlights medical advances, new discoveries
10. Study highlights sustainable footprint of chemical companies
11. Universities highlight benefits of stimulus research funding
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/13/2017)... , Feb. 13, 2017 Former 9/11 Commission ... Judiciary Committee, Janice Kephart of Identity Strategy ... Donald Trump,s "Executive Order: Protecting the Nation ... 27, 2017):  "As President Trump,s ,Travel Ban, ... has now essentially banned the travel ban, it is ...
(Date:2/8/2017)... YORK , Feb. 7, 2017 Report Highlights ... The ... should reach $11.4 billion by 2021, growing at a compound ... Includes - An overview of the global markets for synthetic ... 2015, estimates for 2016, and projections of compound annual growth ...
(Date:2/7/2017)... February 7, 2017 Ipsidy Inc. ... Corporation [OTC: IDGS], ("Ipsidy" or the "Company") a provider ... processing services, is pleased to announce the following changes ... Effective January 31, 2017, Philip D. Beck ... CEO and President.  An experienced payment industry professional and ...
Breaking Biology News(10 mins):
(Date:2/24/2017)... , Feb. 24, 2017  OncoSec Medical Incorporated ... immunotherapies, will host a Key Opinion Leader event to ... an oral and poster presentation at the upcoming 2017 ... The KOL event will be held in-person and via ... EST / 9:00 AM PST at the Lotte New ...
(Date:2/23/2017)... JOSE, Calif. , Feb. 23, 2017 /PRNewswire/ ... exclusive license for two key immunotherapy technologies from ... first technology provides a method to monitor a ... such as PD-L1 and CTLA-4.  The second license ... if a patient is likely to have an ...
(Date:2/23/2017)... ... February 23, 2017 , ... ... today that in a published evaluation of multiple immunoassay-based threat detection technologies ... of Energy Laboratory, PathSensors’ CANARY® biosensor threat detection technology was found to ...
(Date:2/23/2017)... Aviva Systems Biology Corporation (ASB) which ... GenWay Biotech Incorporated, a protein solutions and applications ... for both the research and diagnostic markets. ... capabilities for both entities. GenWay,s 18 years of experience ... complement ASB,s objective to become a leading provider ...
Breaking Biology Technology: