John Pohlman, PhD
John Pohlman is a Research Chemist with the Woods Hole Coastal and Marine Science Center Gas Hydrates Project.
Science and Products
Filter Total Items: 53
Assessing sulfate reduction and methane cycling in a high salinity pore water system in the northern Gulf of Mexico
Pore waters extracted from 18 piston cores obtained on and near a salt-cored bathymetric high in Keathley Canyon lease block 151 in the northern Gulf of Mexico contain elevated concentrations of chloride (up to 838 mM) and have pore water chemical concentration profiles that exhibit extensive departures (concavity) from steady-state (linear) diffusive equilibrium with depth. Minimum ??13C dissolve
Authors
J. W. Pohlman, C. Ruppel, D. R. Hutchinson, R. Downer, R.B. Coffin
Rapid sea level rise and ice sheet response to 8,200-year climate event
The largest abrupt climatic reversal of the Holocene interglacial, the cooling event 8.6–8.2 thousand years ago (ka), was probably caused by catastrophic release of glacial Lake Agassiz-Ojibway, which slowed Atlantic meridional overturning circulation (AMOC) and cooled global climate. Geophysical surveys and sediment cores from Chesapeake Bay reveal the pattern of sea level rise during this event.
Authors
T. M. Cronin, P.R. Vogt, D. A. Willard, R. Thunell, J. Halka, M. Berke, J. Pohlman
Gas hydrate transect across northern Cascadia margin
Gas hydrate is a solid compound mainly comprised of methane and water that is stable under low temperature and high pressure conditions. Usually found in offshore environments with water depths exceeding about 500 meters and in arctic regions associated with permafrost, gas hydrates form an efficient storage system for natural gas. Hence, they may represent an important future energy resource [e.g
Authors
M. Riedel, T. Collett, M. Malone, F. Akiba, M. Blanc-Valleron, M. Ellis, G. Guerin, Y. Hashimoto, V. Heuer, Y. Higashi, M. Holland, P. Jackson, M. Kaneko, M. Kastner, J.-H. Kim, H. Kitajima, P. Long, A. Malinverno, Gwen E. Myers, L. Palekar, J. Pohlman, P. Schultheiss, B. Teichert, M. Torres, A. Tréhu, Jingyuan Wang, U. Worthmann, H. Yoshioka
A field study of earthquake prediction methods in the central Aleutian Islands; Part II
No abstract available.
Authors
Carl Kisslinger, S. Billington, R. Bowman, S. Ihnen, G. Cruz, J. Pohlman, K. Sougstad, S.T. Morrissey
A Field study of earthquake prediction methods in the central Aleutian Islands
No abstract available.
Authors
Carl Kisslinger, S. Billington, R. Bowman, J.C. Harrison, S. Ihnen, C. Meertens, J. Pohlman, K. Sougstad, S.T. Morrissey
Science and Products
Filter Total Items: 53
Assessing sulfate reduction and methane cycling in a high salinity pore water system in the northern Gulf of Mexico
Pore waters extracted from 18 piston cores obtained on and near a salt-cored bathymetric high in Keathley Canyon lease block 151 in the northern Gulf of Mexico contain elevated concentrations of chloride (up to 838 mM) and have pore water chemical concentration profiles that exhibit extensive departures (concavity) from steady-state (linear) diffusive equilibrium with depth. Minimum ??13C dissolve
Authors
J. W. Pohlman, C. Ruppel, D. R. Hutchinson, R. Downer, R.B. Coffin
Rapid sea level rise and ice sheet response to 8,200-year climate event
The largest abrupt climatic reversal of the Holocene interglacial, the cooling event 8.6–8.2 thousand years ago (ka), was probably caused by catastrophic release of glacial Lake Agassiz-Ojibway, which slowed Atlantic meridional overturning circulation (AMOC) and cooled global climate. Geophysical surveys and sediment cores from Chesapeake Bay reveal the pattern of sea level rise during this event.
Authors
T. M. Cronin, P.R. Vogt, D. A. Willard, R. Thunell, J. Halka, M. Berke, J. Pohlman
Gas hydrate transect across northern Cascadia margin
Gas hydrate is a solid compound mainly comprised of methane and water that is stable under low temperature and high pressure conditions. Usually found in offshore environments with water depths exceeding about 500 meters and in arctic regions associated with permafrost, gas hydrates form an efficient storage system for natural gas. Hence, they may represent an important future energy resource [e.g
Authors
M. Riedel, T. Collett, M. Malone, F. Akiba, M. Blanc-Valleron, M. Ellis, G. Guerin, Y. Hashimoto, V. Heuer, Y. Higashi, M. Holland, P. Jackson, M. Kaneko, M. Kastner, J.-H. Kim, H. Kitajima, P. Long, A. Malinverno, Gwen E. Myers, L. Palekar, J. Pohlman, P. Schultheiss, B. Teichert, M. Torres, A. Tréhu, Jingyuan Wang, U. Worthmann, H. Yoshioka
A field study of earthquake prediction methods in the central Aleutian Islands; Part II
No abstract available.
Authors
Carl Kisslinger, S. Billington, R. Bowman, S. Ihnen, G. Cruz, J. Pohlman, K. Sougstad, S.T. Morrissey
A Field study of earthquake prediction methods in the central Aleutian Islands
No abstract available.
Authors
Carl Kisslinger, S. Billington, R. Bowman, J.C. Harrison, S. Ihnen, C. Meertens, J. Pohlman, K. Sougstad, S.T. Morrissey