Featured Research

from universities, journals, and other organizations

Lost & Found – Prototype CO2-measuring Drifter Recovered From The Tropical Atlantic After 7 Weeks Of Silence

Date:
January 13, 2009
Source:
Leibniz Institute of Marine Sciences (IFM-GEOMAR)
Summary:
Marine science sometimes has an element of luck and adventure and relies heavily on international cooperation. Researchers received a special Christmas gift when their prototype profiling float was located and recovered from the open ocean, far offshore of the West African coast, after seven weeks of radio silence.

Marine science sometimes has an element of luck and adventure and relies heavily on international cooperation. Researchers of the Leibniz Institute of Marine Sciences (IFM-GEOMAR) in Kiel, Germany received a special Christmas gift when their prototype profiling float was located and recovered from the open ocean, far offshore of the West African coast, after seven weeks of radio silence.
Credit: Image courtesy of Leibniz Institute of Marine Sciences (IFM-GEOMAR)

Marine science sometimes has an element of luck and adventure and relies heavily on international cooperation. Researchers of the Leibniz Institute of Marine Sciences (IFM-GEOMAR) in Kiel, Germany received a special Christmas gift when their prototype profiling float was located and recovered from the open ocean, far offshore of the West African coast, after seven weeks of radio silence.

The still-experimental NEMO profiling float is designed to monitor CO2 within the ocean and had been deployed in October at an ocean monitoring station close to the Cape Verde Islands (www.tenatso.com). The freely floating robotic instrument records the depth distributions of salinity, temperature, oxygen and CO2 in the upper 200 m of the ocean at 30 hour intervals. When at the surface the data are transmitted via the Iridium satellite system to the researchers in Kiel. Initially the float had functioned very well. But then after half a dozen dives the instrument stopped transmitting so that the worst – a total loss – was assumed. Maybe it had been destroyed by a fishing boat and sunk. Maybe its radio antenna had been bitten off by a shark. A few days before Christmas, however, the Kiel group received their unexpected gift when signals from the float were received again. Position: 500 km north of Cape Verde, far away from land.

“We had really given up on it”, said Björn Fiedler of IFM-GEOMAR who is working on the float’s data for his Ph.D. studies. Then everything went very fast. A rescue mission was organized with colleagues of the Cape Verdean partner institute INDP (Instituto Nacional de Desenvolvimento das Pescas) in Mindelo. Fiedler departed for Cape Verde on the day after Christmas and embarked immediately on the INDP’s vessel ISLANDIA whose crew had been brought back from their festivities. The ISLANDIA reached the drifter’s reported location 30 hours later. There it was spotted and could be recovered after a short search. “This was like hitting the jackpot”, the excited Fiedler said. But it turned out even better: despite the interrupted satellite-link the instrument had continued to carry out its measurement routine as planned, and the full set of data had been stored.


Story Source:

The above story is based on materials provided by Leibniz Institute of Marine Sciences (IFM-GEOMAR). Note: Materials may be edited for content and length.


Cite This Page:

Share This



More Earth & Climate News

Sunday, September 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Climate Change Rally Held in India Ahead of UN Summit

Climate Change Rally Held in India Ahead of UN Summit

AFP (Sep. 20, 2014) — Some 125 world leaders are expected to commit to action on climate change at a UN summit Tuesday called to inject momentum in struggling efforts to tackle global warming. Duration: 00:41 Video provided by AFP
Powered by NewsLook.com
New Music With Recycled Instruments at Colombia Fest

New Music With Recycled Instruments at Colombia Fest

AFP (Sep. 19, 2014) — Jars, bottles, caps and even a pizza box, recovered from the trash, were the elements used by four musical groups at the "RSFEST2014 Sonorities Recycling Festival", in Colombian city of Cali. Duration: 00:49 Video provided by AFP
Powered by NewsLook.com
Raw: Wildfires in CA Burn Forest Asunder

Raw: Wildfires in CA Burn Forest Asunder

AP (Sep. 18, 2014) — An out-of-control Northern California wildfire has nearly 2,800 people from their homes as it continues to grow, authorities said Thursday. Authorities said a man has been arrested on suspicion of arson for starting the fire on Saturday. (Sept. 18) Video provided by AP
Powered by NewsLook.com
Raw: Elephant Undergoes Surgery in Tbilisi Zoo

Raw: Elephant Undergoes Surgery in Tbilisi Zoo

AP (Sep. 18, 2014) — Grand the elephant has successfully undergone surgery to remove a portion of infected tusk at Tbilisi Zoo in Georgia. British veterinary surgeons used an electric drill to extract the infected piece. (Sept. 18) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins