Oceanography

Chile President Michelle Bachelet on Columbia University's Research Boat

President of Chile Michelle Bachelet, at podium, visits Columbia University's research vessel the Langseth with Karen Poniachik (left), Director of the Santiago Global Center. Photo by Carlos Díaz / Columbia Global Center Santiago

Chilean president Michelle Bachelet visited the R/V Marcus G. Langseth on Jan. 9 when it docked at the port city of Valparaiso, touring the ship—which is operated by Columbia’s Lamont-Doherty Earth Observatory--on its months-long voyage to map the occurrences of earthquakes and tsunamis in the region.
Langesth Research Vessel Carlos Gutierrez Mechanic Columbia University

Photo by Bruce Gilbert

Who He Is

Mechanic on the R/V Marcus G. Langseth, part of the Earth Institute’s Lamont-Doherty Earth Observatory

Years at Columbia

43

The Langseth, operated by Columbia’s Lamont-Doherty Earth Observatory for the National Science Foundation, supports worldwide oceanographic research.

Columbia climatologist Maureen Raymo is trying to predict the planet’s future by looking to its past.

The Lamont-Doherty Core Repository holds one of the world’s most unique and important collections of scientific samples from the deep sea—approximately 72,000 meters of sediment cores from every major ocean and sea.

Researchers lower plankton-sampling nets into northern waters. (Beth Stauffer/Lamont-Doherty Earth Observatory)

Researchers See Natural Cycle; But Questions Arise on Climate Change

James Zachos, a paleoceanographer at University of California, Santa Cruz, with a core of sediment from some 56 million years ago, when the oceans underwent acidification that could be an analog to ocean changes today. (Ira Block/National Geographic)

Few Parallels in 300-Million Year Geologic Record

Variations in sea surface salinity influence the movement of seawater and heat around the globe. Credit: NASA

After less than a month in operation, a new NASA satellite has produced the first map showing how sal

Crew members prepare the remotely operated vehicle Jason to dive to Axial Seamount. 
(Bill Chadwick, Oregon State University)

Researchers returning from a cruise some 250 miles off the coast of Oregon have reported seeing a volcanic eruption on the seafloor that they accurately forecast five years ago—