Now showing items 286-305 of 5412

    • Arctic circulation regimes 

      Proshutinsky, Andrey; Dukhovskoy, Dmitry S.; Timmermans, Mary-Louise; Krishfield, Richard A.; Bamber, Jonathan L. (The Royal Society, 2015-09-07)
      Between 1948 and 1996, mean annual environmental parameters in the Arctic experienced a well-pronounced decadal variability with two basic circulation patterns: cyclonic and anticyclonic alternating at 5 to 7 year intervals. ...
    • Arctic decadal variability : an auto-oscillatory system of heat and fresh water exchange 

      Dukhovskoy, Dmitry S.; Johnson, Mark A.; Proshutinsky, Andrey (American Geophysical Union, 2004-02-05)
      This paper presents a mechanism of decadal variability in the Artic Ocean–GIN Sea (Greenland, Iceland and Norwegian Seas) atmosphere-ice-ocean system. We hypothesize that Arctic variability is regulated by heat and freshwater ...
    • Arctic decadal variability from an idealized atmosphere-ice-ocean model : 2. Simulation of decadal oscillations 

      Dukhovskoy, Dmitry S.; Johnson, Mark; Proshutinsky, Andrey (2006-06-20)
      A simple model of the Arctic Ocean and Greenland Sea, coupled to a thermodynamic sea ice model and an atmospheric model, has been used to study decadal variability of the Arctic ice-ocean-atmosphere climate system. The ...
    • Arctic decadal variability from an idealized atmosphere-ice-ocean model: 1. Model description, calibration, and validation 

      Dukhovskoy, Dmitry S.; Johnson, Mark; Proshutinsky, Andrey (American Geophysical Union, 2006-06-20)
      This paper describes a simple “multibox” model of the Arctic atmosphere-ice-ocean system. The model consists of two major modules (an Arctic module and a Greenland Sea module) and several sub-modules. The Arctic module ...
    • The Arctic Environmental Drifting Buoy (AEDB) : report of field operations and results, August, 1987 - April 1988 

      Honjo, Susumu; Krishfield, Richard A.; Plueddemann, Albert J. (Woods Hole Oceanographic Institution, 1990-01)
      There are strong reasons to gather data on polar oceanogrphy and climatology in real time using fully automated, unattended instrumentation systems for long periods; particularly during the inaccessible winter months when ...
    • The Arctic freshwater system : changes and impacts 

      White, Daniel; Hinzman, Larry; Alessa, Lilian; Cassano, John; Chambers, Molly; Falkner, Kelly; Francis, Jennifer; Gutowski, William J.; Holland, Marika M.; Holmes, Robert M.; Huntington, Henry; Kane, Douglas; Kliskey, Andrew; Lee, Craig M.; McClelland, James W.; Peterson, Bruce J.; Rupp, T. Scott; Straneo, Fiamma; Steele, Michael; Woodgate, Rebecca; Yang, Daqing; Yoshikawa, Kenji; Zhang, Tingjun (American Geophysical Union, 2007-11-20)
      Dramatic changes have been observed in the Arctic over the last century. Many of these involve the storage and cycling of fresh water. On land, precipitation and river discharge, lake abundance and size, glacier area and ...
    • Arctic Ocean basin liquid freshwater storage trend 1992–2012 

      Rabe, Benjamin; Karcher, Michael; Kauker, Frank; Schauer, Ursula; Toole, John M.; Krishfield, Richard A.; Pisarev, Sergey; Kikuchi, Takashi; Su, J. (John Wiley & Sons, 2014-02-12)
      Freshwater in the Arctic Ocean plays an important role in the regional ocean circulation, sea ice, and global climate. From salinity observed by a variety of platforms, we are able, for the first time, to estimate a ...
    • Arctic Ocean circulation in an idealized numerical model 

      Sugimura, Peter Joseph (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2008-09)
      The mid-to-deep Arctic Ocean is generally characterized by a cyclonic circulation, contained along shelves and ridges. Here we analyze the general Arctic circulation using an idealized numerical model consisting of a ...
    • The Arctic Ocean spices up 

      Timmermans, Mary-Louise; Jayne, Steven R. (American Meteorological Society, 2016-04-05)
      The contemporary Arctic Ocean differs markedly from midlatitude, ice-free, and relatively warm oceans in the context of density-compensating temperature and salinity variations. These variations are invaluable tracers in ...
    • Arctic Ocean warming contributes to reduced polar ice cap 

      Polyakov, Igor V.; Timokhov, Leonid A.; Alexeev, Vladimir A.; Bacon, Sheldon; Dmitrenko, Igor A.; Fortier, Louis; Frolov, Ivan E.; Gascard, Jean-Claude; Hansen, Edmond; Ivanov, Vladimir V.; Laxon, Seymour W.; Mauritzen, Cecilie; Perovich, Donald K.; Shimada, Koji; Simmons, Harper L.; Sokolov, Vladimir T.; Steele, Michael; Toole, John M. (American Meteorological Society, 2010-12)
      Analysis of modern and historical observations demonstrates that the temperature of the intermediate-depth (150–900 m) Atlantic water (AW) of the Arctic Ocean has increased in recent decades. The AW warming has been uneven ...
    • Arctic pathways of Pacific Water : Arctic Ocean Model Intercomparison experiments 

      Aksenov, Yevgeny; Karcher, Michael; Proshutinsky, Andrey; Gerdes, Rudiger; de Cuevas, Beverly; Golubeva, Elena; Kauker, Frank; Nguyen, An T.; Platov, Gennady A.; Wadley, Martin; Watanabe, Eiji; Coward, Andrew C.; Nurser, A. J. George (John Wiley & Sons, 2016-01-08)
      Pacific Water (PW) enters the Arctic Ocean through Bering Strait and brings in heat, fresh water, and nutrients from the northern Bering Sea. The circulation of PW in the central Arctic Ocean is only partially understood ...
    • Arctic remote autonomous measurement platform post CEAREX engineering report 

      Peal, Kenneth R. (Woods Hole Oceanographic Institution, 1990-11)
      A series of instrumented Arctic buoys has been developed which is designed to be deployed in pack ice to measure and record data from meteorological and ocean sensors as well as from an accelerometer package inside the ...
    • Arc–continent collision and the formation of continental crust : a new geochemical and isotopic record from the Ordovician Tyrone Igneous Complex, Ireland 

      Draut, Amy E.; Clift, Peter D.; Amato, Jeffrey M.; Blusztajn, Jerzy S.; Schouten, Hans A. (2008-06-23)
      Collisions between oceanic island-arc terranes and passive continental margins are thought to have been important in the formation of continental crust throughout much of Earth’s history. Magmatic evolution during this ...
    • Are any coastal internal tides predictable? 

      Nash, Jonathan D.; Shroyer, Emily L.; Kelly, Samuel M.; Inall, Mark E.; Duda, Timothy F.; Levine, Murray D.; Jones, Nicole L.; Musgrave, Ruth C. (The Oceanography Society, 2012-06)
      Surface tides are the heartbeat of the ocean. Because they are controlled by Earth's motion relative to other astronomical objects in our solar system, surface tides act like clockwork and generate highly deterministic ebb ...
    • Are deep-ocean-generated surface-wave microseisms observed on land? 

      Bromirski, Peter D.; Stephen, Ralph A.; Gerstoft, Peter (John Wiley & Sons, 2013-07-25)
      Recent studies attribute land double-frequency (DF) microseism observations to deep water generation. Here we show that near-coastal generation is generally the dominant source region. This determination is based on ...
    • Are marine protected areas a red herring or fisheries panacea? 

      Kaiser, Michel J. (National Research Council Canada, 2005-05-31)
      Chronic failures in marine fisheries management have led some to suggest that marine protected areas (MPAs) are the solution to achieve sustainable fisheries. While such systems work for certain habitat-specific and nonmobile ...
    • Are there eco-metrics for fisheries? 

      Steele, John H. (2005-11-03)
      Ecosystem based management of marine resources is a worthy ideal. At present, however, the science is unable to measure and relate the fundamental concepts of diversity, productivity and resilience required for management ...
    • Area selection for diamonds using magnetotellurics : examples from southern Africa 

      Jones, Alan G.; Evans, Rob L.; Muller, Mark R.; Hamilton, Mark P.; Miensopust, Marion P.; Garcia, Xavier; Cole, Patrick; Ngwisanyi, Tiyapo; Hutchins, David; Fourie, C. J. S.; Jelsma, Hielke; Aravanis, Theo; Pettit, Wayne; Webb, Susan J.; Webb, Jan; Collins, Louise; Hogg, Colin; Horan, Clare; Spratt, Jessica; Wallace, Gerry; Chave, Alan D.; Cole, Janine; Stettler, Raimund; Tshoso, G.; Mountford, Andy; Cunion, Ed; Khoza, T. David; Share, Pieter-Ewald; SAMTEX Team (2009-06-05)
      Southern Africa, particularly the Kaapvaal Craton, is one of the world’s best natural laboratories for studying the lithospheric mantle given the wealth of xenolith and seismic data that exist for it. The Southern African ...
    • Argo array observation of ocean heat content changes induced by tropical cyclones in the north Pacific 

      Park, Jong Jin; Kwon, Young-Oh; Price, James F. (American Geophysical Union, 2011-12-16)
      In situ observations from the autonomous Argo float array are used to assess the basin-averaged ocean heat content change driven by tropical cyclones (TCs) in the North Pacific for 2000–2008. A new statistical approach ...
    • Argo Development Program : final report 

      Woods Hole Oceanographic Institution (Woods Hole Oceanographic Institution, 1986-06)
      The purpose of the contract was to develop and place into operational status a new, combined research/inspection unmanned vehicle system called ARGO/JASON. ARGO is a high altitude search and survey vehicle for use in deep ...