Taxonomy term

oceanography

Ocean dynamics speed sea-level rise along U.S. East Coast

Over the past century, sea levels along the East Coast of the U.S. have risen faster than the global mean. This accelerated rise has so far been attributed to nonclimatic factors, such as land subsidence along the Eastern Seaboard, but available tide gauge data don’t fit with such slow and near-constant processes. A new study now links this regional sea-level rise to climate change and ocean dynamics — and the results may bring more bad news for ocean-front properties along the East Coast.

09 Feb 2014

Down to Earth With: Tanya Atwater

When Tanya Atwater began graduate school in marine geology in 1967, it was considered unlucky for women to be aboard ships. Undaunted, Atwater signed up to work on the first research cruise to take a close look at a seafloor spreading center. Voyage after voyage, she and her mentors fought for her right to work on oceanographic vessels, and it is fortunate they did. Atwater has since had a remarkable career studying plate tectonics and was instrumental in piecing together the evolution of the San Andreas Fault plate boundary.

16 Sep 2013

Down to Earth With: James White

]James White contends that he has one claim to fame: He grew up just 50 kilometers from Dolly Parton in eastern Tennessee. His father worked as a chemist at Oak Ridge National Laboratory, an enclave of science west of Knoxville. Now a chemist himself, White actually has more claims to fame than he is willing to admit. He has co-authored more than 100 peer-reviewed scientific publications; he is the director of the University of Colorado’s Institute of Arctic and Alpine Research (INSTAAR); and he has been named an Institute for Scientific Information highly cited scientist — an honor bestowed on less than 0.5 percent of all publishing researchers.

17 Jun 2013

Denying sea-level rise: How 100 centimeters divided the state of North Carolina

On the surface, it looks like America is a place where scientists and scientific achievements are held in high regard. The retired space shuttles were welcomed by flag-waving crowds; millions of people watched Curiosity’s nail-biting landing on Mars and James Cameron’s descent into the Mariana Trench. The discovery of the Higgs boson made front-page headlines and captured the imaginations of a nation. It would seem that America still loves and respects science.

21 Apr 2013

Down to Earth With: Lawson Brigham

Lawson Brigham, a Distinguished Professor of Geography and Arctic Policy at the University of Alaska at Fairbanks and retired U.S. Coast Guard captain, has worn many hats in his career. He has been the deputy director and Alaska Office director of the U.S. Arctic Research Commission in Anchorage; chair of the Arctic Marine Shipping Assessment of the Arctic Council, an intergovernmental forum of the eight Arctic nations; vice chair of the Arctic Council’s working group on Protection of the Arctic Marine Environment; and a contributing author to the Arctic Climate Impact Assessment.

18 Oct 2012

Blogging On Earth: Humans acidifying ocean at unprecedented rate

Human emissions of carbon dioxide are currently acidifying the oceans at a rate unprecedented in the last 300 million years — since well before the dinosaurs evolved — according to a study published today in Science. More acidic water can dissolve the shells of many marine organisms, including reef- and shell-building species, such as clams, oysters and corals, as well tiny organisms that form the base of the food chain.

01 Mar 2012

Down to Earth With: Deep-Sea submersible Alvin

Every oceanographer knows Alvin. Since 1964, the legendary deep submergence vehicle has carried more than 12,000 scientists and other observers to the bottom of the ocean on more than 4,600 dives. Its exploits are legion: locating and recovering a lost U.S. hydrogen bomb in 780 meters of water off the coast of Spain in 1966, exploring the first-known hydrothermal vents (black smokers off the Galapagos Islands) in 1977 and surveying the wreck of the Titanic in 1986.

04 Jul 2011

Tracking trace elements and isotopes in the oceans

A report from the GEOTRACES cruise across the Atlantic

For decades, scientists have been trying to piece together the enormously complicated puzzle that is the ocean. They have collected many different kinds of information, from trace elements like iron to tritium isotopes, from many different parts of the ocean. Bringing together these disparate pieces to form a more complete picture is crucial to understanding how human activities, the marine food web, the global carbon cycle and the circulation of seawater are all interconnected.

25 Apr 2011

Blogging on EARTH: First dispatches from EGU

EARTH’s Carolyn Gramling is taking in the European Geophysical Union meeting this week in Vienna, Austria. Here are some of the sessions that have caught her interest so far.

05 Apr 2011

Elemental Traces in the Atlantic: The final chapter

Jeremy Jacquot's blog for EARTH, "Elemental Traces in the Atlantic," detailed the scientific journey of the first U.S. GEOTRACES expedition. Read his other blogs here and here, and the original story on GEOTRACES as it appeared in EARTH here. Stay tuned for a wrap-up of the cruise in EARTH early next year.
11 Nov 2010

Pages