Andreas Muenchow

25 posts · 30,637 views

Sea-going Physical Oceanographer with an interest in coastal and polar puzzles.

Icy Seas
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  • September 21, 2014
  • 10:22 PM

A Short Summary of Nares Strait Physics

by Andreas Muenchow in Icy Seas

The Arctic Ocean is a puddle of water covered by ice that melts, moves, and freezes. Grand and majestic rivers of Siberia and America discharge into the puddle and make it fresher than Atlantic Ocean waters. The fate of the … Continue reading →... Read more »

  • August 22, 2014
  • 02:36 PM

East Greenland Current Instabilities

by Andreas Muenchow in Icy Seas

The coast off north-east Greenland is a grey, cloudy, and icy place. I spent 4 weeks on a ship earlier this summer to place sensors on the ocean floor to measure water currents, salinity, and temperature. The data shall uncover … Continue reading →... Read more »

Beszczynska-Möller, A., Woodgate, R., Lee, C., Melling, H., & Karcher, M. (2011) A Synthesis of Exchanges Through the Main Oceanic Gateways to the Arctic Ocean. Oceanography, 24(3), 82-99. DOI: 10.5670/oceanog.2011.59  

Solomon, H., & Ahlnäs, K. (1978) Eddies in the Kamchatka Current. Deep Sea Research, 25(4), 403-410. DOI: 10.1016/0146-6291(78)90566-0  

  • May 30, 2014
  • 10:22 AM

Measuring Ice Thickness From The Ocean

by Andreas Muenchow in Icy Seas

Ice floats and moves abouts. It melts in summer, it freezes in winter, but it moves from here to there driven by winds and currents. Some ice leaves the Arctic Ocean via Fram Strait to the east of Greenland and … Continue reading →... Read more »

Hansen, E., Gerland, S., Granskog, M., Pavlova, O., Renner, A., Haapala, J., Løyning, T., & Tschudi, M. (2013) Thinning of Arctic sea ice observed in Fram Strait: 1990-2011. Journal of Geophysical Research: Oceans, 118(10), 5202-5221. DOI: 10.1002/jgrc.20393  

  • April 14, 2014
  • 12:13 PM

North Greenland Glacier Ice-Ocean Interactions 2014

by Andreas Muenchow in Icy Seas

I will travel to Spitsbergen in six weeks to board the German research icebreaker Polarstern. She will sail west across the Fram Strait towards northern Greenland where some of the last remaining glaciers exist that still discharge their ice via … Continue reading →... Read more »

  • March 13, 2014
  • 11:27 AM

Fram Strait Ice, Oil, and Glaciers

by Andreas Muenchow in Icy Seas

Tomorrow I fly to Germany to prepare for an ocean experiment in the shallow waters off northern Greenland. Together with oceanographers from the Alfred Wegener Institute (AWI), Germany, I hope to deploy 5 ocean current measuring devices on the bottom … Continue reading →... Read more »

  • February 4, 2014
  • 05:44 PM

Petermann Gletscher Thawing and Thinning

by Andreas Muenchow in Icy Seas

Greenland’s tidewater glaciers are losing mass, through thinning and retreat, at an increasing rate. Greenland’s glaciers located north of 78 North latitude often end in ice shelves, floating extensions of the glaciers extending up to several tens of km into … Continue reading →... Read more »

Muenchow, A, L. Padman, and H.A. Fricker. (2014) Interannual Changes of the Floating Ice Shelf of Petermann Gletscher, North Greenland from 2000 to 2012. J. Glac. info:/in press

Johnson, H., Münchow, A., Falkner, K., & Melling, H. (2011) Ocean circulation and properties in Petermann Fjord, Greenland. Journal of Geophysical Research, 116(C1). DOI: 10.1029/2010JC006519  

  • January 27, 2014
  • 01:57 PM

Formation of Nares Strait Ice Bridges in 2014

by Andreas Muenchow in Icy Seas

Darkness and cold covers North Greenland, Ellesmere Island as well as Nares Strait, the waterway that connects these two inhospitable places. And despite the darkness of the polar night, I can see that three beautiful arches made of ice connect … Continue reading →... Read more »

  • October 31, 2013
  • 09:14 PM

Ocean Circulation and Melting Glaciers off North-East Greenland

by Andreas Muenchow in Icy Seas

Scientists like myself always have ideas and theories on how oceans and climate work, but these need testing with real (not virtual) data before they can be accepted as truth or dismissed as fool’s errand. This is how science works. … Continue reading →... Read more »

  • September 12, 2013
  • 08:40 PM

Petermann Ice Island Breaks while Plowing into the Bottom

by Andreas Muenchow in Icy Seas

The Manhattan-sized ice island that last year broke free of Petermann Gletscher in North Greenland plowed into the bottom and broke apart. Force equals mass times acceleration. When 18 giga tons (mass) of moving ice crashes into the ocean’s bottom … Continue reading →... Read more »

Johnson, H., Münchow, A., Falkner, K., & Melling, H. (2011) Ocean circulation and properties in Petermann Fjord, Greenland. Journal of Geophysical Research, 116(C1). DOI: 10.1029/2010JC006519  

  • August 30, 2013
  • 01:26 PM

Canyon below Ice at Petermann Gletscher

by Andreas Muenchow in Icy Seas

The Grand Canyon of Arizona stands tall in the mind as the Colorado River carved itself into 6000 feet of rock. A similar canyon has been discovered in northern Greenland near Petermann Gletscher. The canyon without a name is buried … Continue reading →... Read more »

Bamber, J.L., M.J. Siegert, J.A. Griggs, S.J. Marshall, and G. Spada. (2013) Paleofluvial mega-canyon Beneath the Central Greenland ice sheet. Science, 997-999. DOI: 10.1126/science.1239794  

  • June 20, 2013
  • 01:49 AM

Travels by Mind to the Glaciers and Oceans off North-East Greenland

by Andreas Muenchow in Icy Seas

Our minds travel easier than the body. My eyes have never seen East Greenland, but I moved across its white glaciers, turquoise streams, green valleys, and black oceans many times. Reading expedition reports of Peter Freuchen from 1912, I feel … Continue reading →... Read more »

  • June 6, 2013
  • 07:34 PM

Thule on My Mind: Deep Water Port and Air Force Base

by Andreas Muenchow in Icy Seas

I am an air force brat. My father and my father-in-law enlisted in the German and US Air Forces, respectively. They served during the Cold War when I was born in 1961 a few month after the Berlin Wall went … Continue reading →... Read more »

Elwood, N.J. and J.W. Gaithwaite. (2007) Perpetuating a Pier. Civil Engineering, 77(5), 62-67. info:/

  • May 17, 2013
  • 02:09 PM

Land-Fast Ice Cover off North Greenland: Will NASA bite?

by Andreas Muenchow in Icy Seas

When a large outlet glacier of North Greenland (Petermann Gletscher) discharged an ice island four times the size of Manhattan in August of 2010, the United States’ Congress held formal inquiries on its cause within days of the event. Congressmen, … Continue reading →... Read more »

Johnson, H., Münchow, A., Falkner, K., & Melling, H. (2011) Ocean circulation and properties in Petermann Fjord, Greenland. Journal of Geophysical Research, 116(C1). DOI: 10.1029/2010JC006519  

Reeh, N., H. H. Thomsen, A. K. Higgins, and A. Weidick. (2001) Sea ice and the stability of north and northeast Greenland floating glaciers. Annals of Glaciology, 474-480. info:/

  • May 8, 2013
  • 07:56 AM

The Turbulence of Van Gogh and the Labrador Shelf Current

by Andreas Muenchow in Icy Seas

Vincent Van Gogh painted his most turbulent images when insane. The Labrador Current resembles Van Gogh’s paintings when it becomes unstable. There is no reason that mental and geophysical instability relate to each other. And yet they do. Russian physicist … Continue reading →... Read more »

Aragón, J., Naumis, G., Bai, M., Torres, M., & Maini, P. (2008) Turbulent Luminance in Impassioned van Gogh Paintings. Journal of Mathematical Imaging and Vision, 30(3), 275-283. DOI: 10.1007/s10851-007-0055-0  

Wu, Y., Tang, C., & Hannah, C. (2012) The circulation of eastern Canadian seas. Progress in Oceanography, 28-48. DOI: 10.1016/j.pocean.2012.06.005  

  • May 2, 2013
  • 11:11 AM

Petermann Photos, Places, and People

by Andreas Muenchow in Icy Seas

Petermann Gletscher sent off Manhattan-sized islands of ice in 2010 and 2012 that now litter the eastern seaboard of Canada from its farthest northern Ellesmere Island to its farthest eastern Newfoundland. The ice is streaming south along thousands of miles … Continue reading →... Read more »

Higgins, A.K. (1990) Northern Greenland glacier velocities and calf ice production. Polarforschung, 1-23. info:other/0032-2490

  • April 10, 2013
  • 11:23 AM

Cockpit’s View of Greenland’s Glaciers, Ice-Sheets, and Sea-Ice

by Andreas Muenchow in Icy Seas

The glaciers and ice-sheets of Greenland retreat and melt in a warming world. Towering almost 3000 meters above sea level the ice-sheet is so thick and heavy that it depresses the bedrock underneath below current sea-level. Monitoring the ice-sheet, outlet … Continue reading →... Read more »

Holland, D., Thomas, R., de Young, B., Ribergaard, M., & Lyberth, B. (2008) Acceleration of Jakobshavn Isbræ triggered by warm subsurface ocean waters. Nature Geoscience, 1(10), 659-664. DOI: 10.1038/ngeo316  

Khan, S., Wahr, J., Bevis, M., Velicogna, I., & Kendrick, E. (2010) Spread of ice mass loss into northwest Greenland observed by GRACE and GPS. Geophysical Research Letters, 37(6). DOI: 10.1029/2010GL042460  

  • March 31, 2013
  • 09:14 AM

Greenland, Frederica de Laguna, and Early Convergences

by Andreas Muenchow in Icy Seas

Not sure why, but this photo of two young scientists working off Greenland has been in my mind for the last 3 days. It shows a 25-year graduate student of Anthropology from Columbia University, Frederica de Laguna, with one of … Continue reading →... Read more »

  • March 29, 2013
  • 08:55 AM

Melting Mountain Glaciers: Changing Planet Video

by Andreas Muenchow in Icy Seas

A short video clip explains in stunning clarity how mountain glaciers change. The example is Mount Kilimanjaro in Tanzania, Africa. The video is produced professionally by NBC and NSF and contains actor Gregory Peck, writer Ernest Hemingway, as well glaciologists … Continue reading →... Read more »

  • March 27, 2013
  • 01:08 AM

Oceanography and Icebergs in Baffin Bay: LCDR Edward “Iceberg” Smith

by Andreas Muenchow in Icy Seas

In 1928 Edward H. “Iceberg” Smith took the 125 feet long Coast Guard Cutter “Marion” on an 8,100 mile journey from Boston, MA to New York City, NY via Disko Bay, Greenland. Along the way he defined operational Arctic Oceanography … Continue reading →... Read more »

  • March 15, 2013
  • 09:03 AM

Oceanography, Technology, and Ships

by Andreas Muenchow in Icy Seas

Sea-going oceanography is in transition. Times are exciting as we developed new tools, sensors, and ideas on how to observe the ocean and the stuff that lives in it, floats on it, and is submerged below it. I just learned … Continue reading →... Read more »

Kintisch, E. (2013) A Sea Change for U.S. Oceanography. Science, 339(6124), 1138-1143. DOI: 10.1126/science.339.6124.1138  

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