Frank Nitsche, Author at State of the Planet

I am a marine geologist and geophysicist at Lamont-Doherty Earth Observatory. Large parts of the earth surface are shaped by sedimentary processes. I am fascinated with complex sedimentary features, their morphology, and understanding the mechanisms that built and modified these features. Based on my background in geophysics I am using geophysical techniques to image the morphology, extent, and internal structure of complex sedimentary features to understand their evolution as well as the controlling processes.

Recent Posts

Antarctica, NBP1503 science team

Smooth Sailing Back to Tasmania

After a surprisingly smooth crossing of the Southern Ocean, with favorable winds we arrived back in Hobart, Tasmania. The weather maps show that we just got ahead of another big storm system.

by |May 1, 2015
NB Palmer, West Antarctica, CTD system

Taking a 4,000-Meter-Deep Profile of Antarctic Waters

In addition to understanding potential pathways for “warmer” circumpolar deep water to reach the ice shelf, we are also measuring what the structure and properties of the water column are and determining if there is already warmer water on or near the continental shelf that could already interact with the glaciers of East Antarctica today.

by |April 27, 2015

Mapping the Seafloor

One of the goals of this expedition is to investigate if water from the Southern Ocean with temperatures above the melting point of glaciers could reach the glaciers in East Antarctica, and if there are any obstacles on the seafloor of the shelf that impact the ability of such water to reach the glaciers and ice streams.

by |April 20, 2015

In the Ice

Several days ago we reached our main work areas along the margin of East Antarctica. Our expedition is relatively late in the season and the seas around Antarctica are starting to freeze.

by |April 10, 2015

Closing in on Antarctica

We are less than a day away from our first study area on the continental shelf in front of the Dibble Glacier. As we approach Antarctica we are starting our science program with a 4500 meter deep CTD and multibeam acquisition.

by |April 6, 2015

On Our Way: Avoiding the Storm

We are now aboard the R/V Palmer and on our way to East Antarctica. Due to¬†two storms in our direct way we are heading west first to go around the storms and we’ll then head south on their backside.

by |March 30, 2015

Preparing for Seven Weeks at Sea

For our spring expedition, NBP1503, to the margin of East Antarctica we will live and work on board the United States icebreaker Nathaniel B. Palmer. Together we are eight scientists, 10 science support staff and 19 crew members of the ship’s crew.

by |March 23, 2015

The Oden and the Polarstern Cross Paths

We successfully finished our scientific work in the Amundsen Sea and are now heading back to Punta Arenas, at the tip of South America. It will take eight to nine days to get there depending on the weather and winds. Just before we left the Amundsen Sea we passed the German ice-breaker ship, the Polarstern…. read more

by |March 3, 2010

Looking at Mud to Learn About Ice Sheets

The bottom of the seafloor shows us where ice used to flow. To pinpoint when the ice retreated, the geologists on board take samples of mud and sand from the seafloor. Using a weighted steel barrel lowered to the seafloor they bore their way through sand and mud. A catcher at the bottom of the… read more

by |February 26, 2010

Following the Trail of Ancient Icebergs

A few days ago we reached our main study area in the eastern Amundsen Sea. Here we are using sonar to map the contours of the seafloor in great detail. During the last glaciation the Antarctic ice sheet was much larger and covered most of the continental shelf, an underwater extension of the continent that… read more

by |February 21, 2010