HOME >> BIOLOGY >> NEWS
IODP Tahiti sea level expedition gets underway

Off the coast of Tahiti, IODP scientists will take samples of fossil corals from the ocean seafloor to analyze the environmental records that are inside them. Scientists expect the coral reefs to yield records on changes in sea surface temperature during the circumscribed period and information on climatic anomalies, including El Nio/Southern Oscillation events.

Through this research expedition, IODP scientists aim to learn more about the timing and course of past global sea level changes to better understand present and future sea level rise due to global greenhouse conditions. Since the climax of the last ice age, global sea level has risen by about 120 meters, primarily because of the melting of large inland ice sheets and thermal expansion of the global body of ocean water?attributable to rising temperatures.

According to IODP scientists, Tahiti is well situated for these investigations because the island is located in a tectonically stable region. Consequently, changes in sea level here can be related solely to global effects. Because the corals off Tahiti have strict ecological requirements and are extremely sensitive to environmental changes, both natural and human-induced, they are accurate, sensitive recorders of past sea level and climatic change.

The science party will analyze fossil, i.e. dead corals, because they form archives that help decipher the long-term behavior of the tropical ocean-atmosphere system and how it has responded to manmade and natural impacts. Live corals will not be cored, nor analyzed.

Because corals live in a sufficiently narrow depth range, they can be used as absolute sea level indicators. Corals can be considered chronometers as they can absolutely date by radiometric methods, methods so accurate that even in the oldest coral rocks to be studied, scientists will be able to accurately determine the age of corals to within 50 years.

Expedition co-chief scientist Yasufumi
'"/>

Contact: Nancy Light
nlight@iodp.org
202-465-7511
Integrated Ocean Drilling Program Management International
7-Oct-2005


Page: 1 2

Related biology news :

1. Glimmer of hope for Tahitian tree snails survival
2. Researchers watch antibiotics, bacteria meet at atomic level
3. Eat fish -- especially if you drink high levels of alcohol
4. 1 in 4 NYC adults has elevated blood mercury levels
5. Manganese levels increase in scrapie-infected sheep before clinical symptoms develop
6. Cord blood may preserve insulin levels in children with type 1 diabetes
7. Children of smokers have more than 5 times higher levels of a nicotine toxin
8. WHO data confirms low level of resistance to Tamiflu
9. Premature births may be linked to seasonal levels of pesticides and nitrates in surface water
10. Urban sediments after Hurricanes Katrina, Rita contained high levels of contaminants
11. Alzheimers, Parkinsons, type 2 diabetes similar at molecular level

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


(Date:5/14/2020)... ... May 12, 2020 , ... ... platform that helps Life Science Manufacturers accurately and easily project contracted liabilities ... development of Gross-to-Net models by projecting discounts/rebates to Commercial and Government entities, ...
(Date:5/6/2020)... ... May 06, 2020 , ... ... will become the latest out-of-state company to partner with the device accelerator ... has developed a point-of-care analyzer capable of accurately performing enzyme-linked immunosorbent assays ...
(Date:4/30/2020)... N.M. (PRWEB) , ... April 28, 2020 , ... ... the world’s biggest challenges in agriculture and aquaculture with the mission of improving global ... at the 2020 F&A Next ' Next Heroes in Food- and Ag-Tech ' virtual ...
Breaking Biology News(10 mins):
(Date:5/15/2020)... , ... May 15, 2020 , ... Sentien Biotechnologies, Inc., ... of Richard Ganz as Executive Chairman. Mr. Ganz will continue to lead Sentien’s ... well as work closely with CEO Brian Miller and Sentien’s management team. ...
(Date:5/14/2020)... , ... May 12, 2020 , ... ... for translational research, is bringing together thousands of industry leaders, clinicians, research scientists, ... highlights two plenary speakers, Carl June, MD, Director of the Center for Cellular ...
(Date:5/14/2020)... ... , ... Early stages of drug discovery often depend on ... the drug’s mechanism of action (MOA). Gene expression profiling technologies like RNA sequencing ... molecular pathways. This information can complement phenotypic readouts and can be used to ...
(Date:5/5/2020)... ... May 04, 2020 , ... ... for the life sciences industry, today announced that Informa Training Partners, a life ... its name to Red Nucleus Boston, effective immediately. , “The name change solidifies ...
Breaking Biology Technology:
Cached News: