VARIABILITIES OF CURRENTS UNDER FAST ICE IN LUTZOW-HOLM BAY, ANTARCTICA-COMPARISON BETWEEN OBSERVATIONS AND MODEL
スポンサーリンク
概要
- 論文の詳細を見る
We made current measurements at three sites under fast ice in Lutzow-Holm Bay during 1990-1991. In spite of no direct wind forcing and negligible thermohaline forcing, the current velocity is not small. Especially in Ongul Strait, the velocity typically reaches the order of 0.3 m/s. It is also noted that the direction of the mean current changes drastically from southward to northward in May. The currents at all sites have some correlation with the wind, atmospheric pressure and tide at Syowa Station. We constructed a numerical ocean model to understand the current system under fast ice. We modeled Lutzow-Holm Bay and the continental shelf which extends eastward. The model is barotropic, and the westward wind stress is applied to the ocean. In the case of no fast ice on the east shelf (corresponding to the before-May case), mainly the first mode of shelf wave is excited; while, when the margin of the fast ice is located at the shelf break (corresponding to the after-May case), the second mode of shelf wave is preferentially excited. Correspondingly, the current direction near the coast becomes opposite between these cases, which agrees with the observations in Ongul Strait. These studies suggest that the current variability under fast ice is mostly governed by shelf wave (or coastally trapped waves) generated by the wind stress offshore, and the dominant mode of shelf wave depends strongly on the location of the fast ice margin.
- 国立極地研究所の論文
著者
-
Ushio Shuki
National Institute Of Polar Research
-
Ohshima Kay
The Institute of Low Temperature Science, Hokkaido University
-
Kawamura Toshiyuki
The Institute of Low Temperature Science, Hokkaido University
-
Takizawa Takatoshi
Japan Marine Science and Technology Center
-
KAWAMURA Toshiyuki
Institute of Low Temperature Science, Hokkaido University
-
OHSHIMA Kay
Institute of Low Temperature Science, Hokkaido University
-
Kawamura Toshiyuki
Institute Of Low Temperature Science Hokkaido University
-
Ohshima K
Hokkaido Univ. Sapporo Jpn
-
Ohshima Kay
The Institute Of Low Temperature Science Hokkaido University
-
Ohshima Kay
Hokkaido Univ. Sapporo Jpn
-
Ohshima Kay
Institute Of Low Temperature Science Hokkaido University
-
Kawamura Toshiyuki
The Institute Of Low Temperature Science Hokkaido University
-
Ushio S
National Institute Of Polar Research
関連論文
- Thickness and production of sea ice in the Okhotsk Sea coastal polynyas from AMSR-E
- Foreword
- Oceanographic Data in the Greenland Sea and Around Svalbard in 1991-1993
- Carbon dioxide variations in the Greenland Sea (scientific paper)
- WATER STRUCTURE IN KONGSFJORDEN, SPITSBERGEN IN 1991-1993
- Seasonal variations in ocean structure and current in Ongul Strait, Antarctica, in 1991
- PRELIMINARY RESULTS OF HYDROGRAPHY UNDER FAST ICE IN LUTZOW-HOLM BAY, ANTARCTICA IN 1990
- A NOTE ON WATER EXCHANGE UNDER FAST ICE IN LUTZOW-HOLM BAY, ANTARCTICA
- ICE PRODUCTION AND CONVECTIVE-MIXING IN THE ANTARCTIC COASTAL POLYNYA
- Data of Sea-ice Cores Obtained in Lutzow-Holm Bay from 1990 to 1992 (JARE-31,-32) in the Period of Japanese Antarctic Climate Research
- SEA ICE IN LUTZOW-HOLM BAY (II) : ITS STRUCTURE AND GROWTH PROCESSES
- GROWTH PROCESSES OF SEA ICE IN ONGUL STRAIT
- VARIABILITIES OF CURRENTS UNDER FAST ICE IN LUTZOW-HOLM BAY, ANTARCTICA-COMPARISON BETWEEN OBSERVATIONS AND MODEL
- SEASONAL VARIATIONS OF THE ANTARCTIC COASTAL OCEAN IN AND OFF LUTZOW-HOLM BAY
- SEA-ICE FORMATION AND WATER STRUCTURES IN COASTAL POLYNYAS OFF LUTZOW-HOLM BAY AND BREID BAY
- Growth processes of sea ice in Lutzow-Holm Bay (abstract)
- Stepped structure in temperature and salinity profiles,observed near icebergs trapped by fast ice, Antarctica (abstract)
- MEASUREMENT OF WATER TEMPERATURE PROFILE IN COASTAL POLYNYAS USING AXBT
- DISTRIBUTION OF SEA ICE OFF QUEEN MAUD LAND FROM NOAA SATELLITE AVHRR IMAGERY
- Foreword
- Foreword
- Properties of Sea Ice and and Overlying Snow in the Southern Sea of Okhotsk
- Direct observations of sea-ice thickness and brine rejection off Sakhalin in the Sea of Okhotsk
- Subinertial and Seasonal Variations in the Soya Warm Current Revealed by HF Ocean Radars, Coastal Tide Gauges, and Bottom-Mounted ADCP
- Volume Transport of the Soya Warm Current Revealed by Bottom-Mounted ADCP and Ocean-Radar Measurement
- Water Mass Exchange and Diapycnal Mixing at Bussol' Strait Revealed by Water Mass Properties
- Observation of the Soya Warm Current Using HF Ocean Radar
- A Generation Mechanism for Mesoscale Eddies in the Kuril Basin of the Okhotsk Sea : Baroclinic Instability Caused by Enhanced Tidal Mixing
- Winter Oceanographic Conditions in the Southwestern Part of the Okhotsk Sea and Their Relation to Sea Ice
- Meteorological Observations at Schmidt, Northern Sakhalin, August 1995 - August 1998
- Foreword
- Foreword
- Oceanographic Data in Lutzow-Holm Bay of Antarctic Climate Research Programme from March 1990 to January 1991 (JARE-31)
- Glaciological characteristics of cores drilled on Jostedalsbreen, Southern Norway
- Interannual Variability of Sea Ice Area in the Sea of Okhotsk : Importance of Surface Heat Flux in Fall
- Surface Heat Budget of the Sea of Okhotsk during 1987-2001 and the Role of Sea Ice on it
- Thickness distribution, texture and stratigraphy, and a simple probabilistic model for dynamical thickening of sea ice in the southern Sea of Okhotsk
- RELATIONSHIP BETWEEN THE UPPER OCEAN AND SEA ICE DURING THE ANTARCTIC MELTING SEASON
- Oceanographic Data in Lutzow-Holm Bay of the Antarctic Climate Research Program from January 1991 to February 1992 (JARE-32)
- MESOSCALE ICE-OCEAN FEATURES IN THE MARGINAL ICE ZONE OFF SYOWA STATION OBSERVED IN NOAA AVHRR IMAGERY
- Preface
- Coastal Polynyas off East Queen Maud Land Observed from NOAA AVHRR Data
- Data of sea-ice cores obtained in Luzow-Holm Bay from 1990 to 1992 (JARE-31, -32) in the period of Japanese Antarctic Climate Research(Glaciology 24)
- Oceanographic data in Luzow-Holm Bay of the Antarctic Climate Research Program from January 1991 to February 1992 (JARE-32)(Oceanography 15)
- Two-layer model of wind-driven circulation in the Antarctic Ocean
- MECHANISMS FOR THE SEASONAL CYCLE IN THE ANTARCTIC COASTAL OCEANS
- In-situ ice and meteorological observations in the southern Sea of Okhotsk in 2001 winter: ice structure, snow on ice, surface temperature, and optical environments
- MOS-1/1b MESSR Observations of the Antarctic Sea Ice: Ice Bands and Ice Streamers
- SOME FEATURES OF THE ANTARCTIC SEA ICE OBSERVED FROM MESSR IMAGES
- Sea Ice Thickness and Snow Depth Data Collected by Ship-based Video Observations during the 29th to 48th Japanese Antarctic Research Expeditions
- Seasonal Variations of Water Masses and Sea Level in the Southwestern Part of the Okhotsk Sea
- Satellite observation of melting and break-up of fast ice in Lutzow-Holm Bay, East Antarctica
- Ship-borne electromagnetic induction sounding of sea ice thickness in the Arctic during summer 2003
- Foreword
- Preliminary discussion of physical properties of the Dome Fuji shallow ice core in 1993, Antarctica
- An overview on biological/oceanographic survey off Adelie Land, Antarctica in January-February 1996
- Particle Tracking Experiments on a Model of the Okhotsk Sea : Toward Oil Spill Simulation
- Barotropic Response of the Sea of Okhotsk to Wind Forcing
- Preliminary study of the transition of sea ice during the melting process
- Wind Filds over Funka Bay and Their Effect on Water Circulation in the Bay
- SNOW OBSERVATIONS BY MSR
- Sea-ice drift characteristics revealed by measurement of acoustic Doppler current profiler and ice-profiling sonar off Hokkaido in the Sea of Okhotsk
- Volume Transport in the Soya Strait during 2006-2008
- THE ORIGIN OF SEA ICE IN THE SEA OF OKHOTSK
- Oceanographic data in Luzow-Holm Bay of Antarctic climate Research Programme from March 1990 to January 1991 (JARE-31)(Oceanography 13)
- MEASUREMENT OF THE BEAUFORT CIRCULATION USING AN IOEB (ICE OCEAN ENVIRONMENTAL BUOY)
- Sea-ice retreat in the Sea of Okhotsk and the ice-ocean albedo feedback effect on it