| Multi-Fractal Thermal Characteristics of the Southwestern GIN Sea Upper Layer |
2004 |
11 pages |
| Authors:
Peter C. Chu; NAVAL POSTGRADUATE SCHOOL MONTEREY CA NAVAL OCEAN ANALYSIS AND PREDICTION LAB
|
 | Multifractal characteristics of the upper layer thermal structure in the southwestern Greenland Sea, Iceland Sea, and Norwegian Sea (GIN Sea) are analyzed using high-resolution, digital thermistor chain data. The energy spectrum at 20 m depth (cold sublayer) shows the existence of a spike at the scale of approximate 3 km representing the chimney scale. The graph dimension varies from higher values such as 1.89 at the surface to 1 .44 ... |
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| Field Evaluation of Sediment Structure and Content Relative to Associated Hydrates |
21 JAN 2003 |
16 pages |
| Authors:
Richard B. Coffin; NAVAL RESEARCH LAB WASHINGTON DC
|
| The goal of the first year in the program is to initiate sample analysis of hydrates and sediments to provide a database that will contribute to the development of a hydrate dissociation simulator. This work was conducted primarily on samples previously taken in the Cascadia Margin (CM) and Gulf of Mexico (GOM). In addition there is some comparison with data from samples taken in 1998 on the Haakon-Mosby Mud Volcano ... |
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| Variability of the Circulation in the European Polar Seas |
01 FEB 1999 |
3 pages |
| Authors:
Peter Schlosser; LAMONT-DOHERTY EARTH OBSERVATORY PALISADES NY
|
| Our primary goal was to study formation rates, pathways and mean residence times of the deep waters in the basins of the European Polar Seas. Evaluation of the tritium/(exp 3)He time series for the Greenland Sea Deep Water spanning the period between 1972 and 1988 yielded the surprising result of a drastic reduction in Greenland Sea Deep Water formation from about 0.5 Sv to 0.1 Sv starting around 1980. However, ... |
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| Software Design Document for the Polar Ice Prediction System Version 2. 0 |
15 DEC 1997 |
152 pages |
| Authors:
Ruth H. Preller; Pamela G. Posey; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
|
| Since 1987, the Fleet Numerical Meteorology and Oceanography Center (FNMOC) has been running sea ice forecasting systems in various regions of Navy interest (the Central Arctic, the Barents Sea, and the Greenland Sea). The Polar Ice Prediction System (PIPS1.1) predicts sea ice conditions in the Arctic basin, the Barents Sea, and the Greenland Sea at a resolution of 127 km. Two regional sea ice forecasting systems, the Polar Ice Prediction ... |
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| Continuously Logged Sediment Acoustical and Physical Properties Data, R/ V Haakon Mosby Cores, Norwegian/Greenland Sea |
18 APR 97 |
166 pages |
| Authors:
William B. Sawyer; Frederick A. Bowles; Lisa Phelps; Peter R. Vogt; Kathleen Crane; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS GEOLOGY/ GEOPHYSICS SECTION
|
| Sediment cores were collected in the Greenland/Norwegian Sea for the purpose of ground-truthing previously collected sidescan imagery. This report presents the results of shore-based analyses performed on the cores. Interpretive results are not included. The unopened cores were continuously logged at 2-cm intervals for compressional-wave velocity and gamma-ray attenuation. Wet bulk density, porosity, water content, and void ratio were calculated from the attenuation measurements. Analytical results are presented in the ... |
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| Deep Mixed Layer Entrainment |
MAR 97 |
78 pages |
| Authors:
Rebecca E. Stone; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| A bulk turbulence-closure mixed layer model is generalized to allow prediction of very deep polar sea mixing. The model includes unsteady three- component turbulent kinetic energy budgets. In addition to terms for shear production, pressure redistribution, and dissipation, special attention is devoted to realistic treatment of thermobaric enhancement of buoyancy flux and to Coriolis effect on turbulence. The model is initialized and verified with CTD data taken by R/V Valdivia ... |
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| The Development of an Ice-Ocean Coupled Model for the Northern Hemisphere |
30 DEC 96 |
68 pages |
| Authors:
Abe Cheng; Ruth H. Preller; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS COASTAL AND SEMI- ENCLOSED SEAS SE CTION
|
| The Polar Ice Prediction System (PIPS), based on the Hibler ice model, has been reformulated into spherical coordinates for the Northern Hemisphere. These spherical coordinates help to avoid a numerical singularity at the North Pole and numerical instabilities in high latitudes. Further, a coordinate transformation was chosen so that a new equator coincides with the 170 deg W - 10 deg E great circle, and a new north pole is ... |
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| Software Test Description for the Polar Ice Prediction System 2.0 |
11 DEC 96 |
45 pages |
| Authors:
Pamela G. Posey; Ruth H. Preller; Julia W. Crout; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS COASTAL AND SEMI- ENCLOSED SEAS SE CTION
|
| Since 1987, the Fleet Numerical Meteorology and Oceanography Center (FNMOC) has been running sea ice forecasting systems in various regions of Navy interest (the Central Arctic, the Barents Sea, and the Greenland Sea). The Polar Ice Prediction System Version 1.1 predicts sea ice conditions in the Arctic basin, the Barents Sea, and the Greenland Sea at a resolution of 127km. Two regional sea ice forecast systems, the Polar Ice Prediction ... |
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| The Jan Mayen Current from 1989 and 1990 Summer Data |
SEP 96 |
141 pages |
| Authors:
Marla D. Stone; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| As part of the Greenland Sea Project, a hydrographic survey consisting of 45 CTD stations was conducted in the vicinity of the Jan Mayen Current (JMC) in August 1990 aboard the USNS BARTLETT to further characterize and quantify circulation of the JMC. Comparisons were made with a similar survey performed in September 1989. In the summer of 1990, as in 1989, the JMC appears to be both a portion of ... |
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| Validation Test Report for a Navy Sea Ice Forecast System: The Polar Ice Prediction System 2.0 |
16 AUG 96 |
35 pages |
| Authors:
Ruth H. Preller; Pamela G. Posey; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS COASTAL AND SEMI- ENCLOSED SEAS SE CTION
|
| Since 1987, the Fleet Numerical Meteorology and Oceanography Center (FNMOC) has been running sea ice forecasting systems in various regions of Navy interest (Central Arctic, the Barents Sea, and the Greenland Sea). The Polar Ice Prediction System 1.1 predicts sea ice conditions in the Arctic basin, the Barents Sea, and the Greenland Sea at a resolution of 127 km. Two regional sea ice forecast systems, the Polar Ice Prediction System ... |
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| Variations of Ice Cover and Thermohaline Structure in the Arctic-GIN Sea Basin. Analysis of Model Results for the 1986-1990 Period |
26 JAN 96 |
42 pages |
| Authors:
Richard A. Allard; Steve A. Piacsek; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS COASTAL AND SEMI- ENCLOSED SEAS SE CTION
|
| Thermodynamic changes in the Arctic ice cover and ocean have been investigated for the years 1986-1990 with a coupled ice-ocean numerical model. The model basin includes the Barents and GIN (Greenland-Iceland-Norwegian) Seas on a polar stereographic grid with 127 km resolution. The coupled model consists of the Hibler ice model, a 3-D advective turbulent mixed layer model based on the Mellor-Yamada level 2.5 closure scheme, and a diagnostic inverse model ... |
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| Detection of Oceanic Convection Utilizing Submarine-Observed Acceleration |
JUN 95 |
94 pages |
| Authors:
Kevin F. Bedell; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The feasibility of using submarine-recorded acceleration and navigational data to detect deep convection in the ocean was explored by comparing actual submarine observations of vertical velocity with vertical velocity of a hypothetical submarine driven through a field of oceanic turbulence predicted by Large-Eddy Simulation (LES). The actual submarine data included time series of three-dimensional acceleration and submarine velocity from the inertial navigation system (INS), gravity and keel depth. Of all ... |
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| Turbulent Heat Flux Measurements Over The Greenland, Norwegian And Barents Seas |
MAR 95 |
91 pages |
| Authors:
Joseph C. Johnson; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Turbulent heat fluxes in the Greenland, Norwegian and Barents Seas during March 1988, February and March 1989, November 1991 and January and March 1992 have been calculated with the bulk method using shipboard-based measurements of wind speed, air and sea surface temperatures, relative humidity and atmospheric pressure. The largest mean total turbulent heat flux, near 250 W/m2, was in the Greenland Sea in March 1989. The Norwegian Sea had mean ... |
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| Satellite Multisensor Data Techniques for Sea Ice Mapping |
08 DEC 94 |
54 pages |
| Authors:
Denise J. Gineris; Douglas A. May; Jeffrey D. Hawkins; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS
|
| Operational sea ice mapping capabilities utilizing ground truth data are extremely limited due to the remote proximity and harsh environment of the polar regions. Satellite remote sensing offers a sufficient quantity of accurate, high resolution environmental parameters that satisfy many ice mapping requirements. This study explores the application of multiple satellite sensor data combination techniques for sea ice analysis. Sea ice information from visible, infrared, passive microwave, and active radar ... |
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| Monthly Mean Sea Ice Data from the Polar Ice Prediction System, the Regional Polar Ice Prediction System - Barents Sea and the Regional Polar Ice Prediction System - Greenland Sea |
06 MAY 94 |
83 pages |
| Authors:
P. G. Posey; R. H. Preller; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS
|
| The Polar Ice Prediction System (PIPS), the Regional Polar Ice Prediction System - Barents (RPIPS-B) and the Regional Polar Ice Prediction System - Greenland Sea (RPIPS-G) are all operational sea ice forecasting systems that have been run daily at the Fleet Numerical Meteorology and Oceanography Center (FNMOC) since September 1987, June 1989, and October 1991, respectively. The basis for all three models is the Hibler ice model (Hibler, W. D. ... |
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| A Study of the Large Scale Circulation and Water Mass Formation in the Nordic Seas and Arctic Ocean |
FEB 94 |
|
| Authors:
Cecilie Mauritzen; WOODS HOLE OCEANOGRAPHIC INSTITUTION MA
|
 | In this thesis, production of dense water that feeds the dense overflows across the Greenland-Scotland Ridge has been considered. A new circulation scheme is developed which is consistent with the water masses, currents and air-sea fluxes in the region, and with the important observation that the dense overflows show little or no seasonal or interannual variability. An inverse box model has been constructed that shows that the new circulation scheme ... |
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| A Survey of the Impact on Acoustic Propagation of Warm Core Ocean Eddys |
21 SEP 93 |
22 pages |
| Authors:
David G. Browning; Joseph M. Monti; Linda S. Petitpas; NAVAL UNDERSEA WARFARE CENTER NEWPORT DIV RI
|
| Warm core eddys have been found throughout the oceans of the world. Most have a bowl-like shape extending down from the surface, which, along with an increased sound speed due to the warmer water core, causes more acoustic energy to be refracted toward the surface than would occur without an eddy present. However, the impact on acoustic propagation varies significantly from ocean to ocean, because of variations in eddy size ... |
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| Cooling of the West Spitzbergen Current: Wintertime Observations West of Svalbard |
30 AUG 93 |
62 pages |
| Authors:
Timothy J. Boyd; Eric A. D'Asaro; UNIV OF WASHINGTON SEATTLE APPLIED PHYSICS LAB
|
| The West Spitzbergen Current (WSC) is the major source of heat and salt for the Arctic Ocean and the areas of deep convection in the Greenland Sea. The WSC current cools dramatically downstream. Hydrographic and velocity data from a 3-week, midwinter cruise off Spitzbergen are used to investigate the heat budget of the WSC and the mechanisms of cooling. The downstream divergence of mean heat flux in the WSC produces ... |
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| Regional Characterization of Mine Blasts, Earthquakes, Mine Tremors, and Nuclear Explosions using the Intelligent Seismic Event Identification System |
31 JUL 93 |
99 pages |
| Authors:
Douglas R. Baumgardt; ENSCO INC SPRINGFIELD VA
|
| This report describes the results of a study of the Intelligent Seismic Event Identification System (ISEIS) which was installed at the Center for Seismic Studies and applied to regional events in the Intelligent Monitoring System (IMS) database. A subset of IMS data has been collected for known events in a database called the Ground Truth Database (GTD) and these events were processed by ISEIS. This has shown that the regional ... |
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| Processing and Analysis of SeaMARC II Data: (1) Fieberling Guyot; (2) Raw Phase Experiment in Norwegian-Greenland Sea |
APR 93 |
6 pages |
| Authors:
C. de Moustier; P. F. Lonsdale; SCRIPPS INSTITUTION OF OCEANOGRAPHY LA JOLLA CA MARINE PHYSICAL LAB
|
| The objectives of this work were to devise processing techniques for acoustic measurements made with bathymetric sidescan sonar systems and to apply them to data collected with the SeaMARC II system. The main goals were to provide end-users with co-registered acoustic imagery and bathymetry displayed in a geographic reference frame with a minimum of artifacts and with improved contrast or feature definition, while retaining as much as possible the relative ... |
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| Modeling Studies of Ice-Ocean Dynamics and Thermodynamics |
10 MAR 93 |
7 pages |
| Authors:
George L. Mellor; PRINCETON UNIV NJ
|
| These papers were mainly concerned with the development of an ice model and the coupling of the model to the (now standard) Princeton ocean model. The studies were largely based on either one-dimensional, time dependent model or two-dimensional (x,z) models. The latter included a model study of atmospheric-ice interactions |
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| Arctic Cyclones and Marginal Ice Zone (MIZ) Variability |
MAR 93 |
87 pages |
| Authors:
John Rutherford; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The Seasonal Ice Zone Experiment (SIZEX), conducted in January 1992, was designed as the European Space Agency's ERS-1 synthetic-aperature radar (SAR) validation experiment. The satellite was placed in a three day exact repeat orbit, with ascending and descending passes which crossed the Greenland Sea marginal ice zone. In conjunction with SAR imagery collected by the Nansen Environmental and Remote Sensing Center, the research vessel Hakon Mosby recorded meteorological data on ... |
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| CEAREX: Hydrography, Acoustic Doppler Current Studies and Numerical Modeling of Eddies and their Interaction with the MIZ |
23 DEC 92 |
10 pages |
| Authors:
Henry J. Niebauer; ALASKA UNIV FAIRBANKS INST OF MARINE SCIENCE
|
| The long-term goals are to understand how the marginal ice edge zone (MIZ) interacts with the open ocean in an oceanographic/meteorological/ biological sense. This includes understanding the processes and dynamics for the generation, dissipation and role of mesoscale eddies and chimneys in the MIZ (and in the open ocean after the ice has retreated or melted) in the Greenland Sea/Fram Strait. A further goal is to understand how these physical ... |
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| Conditioning Instabilities of the Greenland Sea |
SEP 92 |
57 pages |
| Authors:
James M. Olson; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| This is an examination of the open ocean deep water formation process of the Greenland Sea and how it is effected by the depth dependent thermal expansion coefficient. It is hypothesized that free convection associated with parcel instability is possible because of the increase in the thermal expansion coefficient with pressure in conjunction with requisite ambient temperature and salinity profiles. Based on the depth dependence of the thermal expansion coefficient, ... |
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| Tracing Upper Waters in the Arctic Ocean, |
MAR 1992 |
|
| Authors:
E. P. Jones; Leif G. Anderson; BEDFORD INST OF OCEANOGRAPHY DARTMOUTH (NOVA SCOTIA)
|
| We report results from the 1987 F.S. Polarstern cruise to the Nansen Basin that begin to address questions regarding how global climate change might affect the Arctic. Before the effects of global change can be assessed, the sources of upper waters must be determined and their circulation patterns mapped. In surface water, total carbonate concentrations distinguish between a northern fresh water component, whose origin is river runoff, and a southern ... |
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| Sensitivity of the Tomographic Inverse Solution to Acoustic Path Variability |
MAR 92 |
40 pages |
| Authors:
Gary E. English; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| As part of the Greenland Sea Project Woods Hole Oceanographic Institution and Scripps Institute of Oceanography deployed six acoustic tomography transceiver moorings to measure variability of the Greenland Sea gyre through a cooling cycle from September 1988 to August 1989. Using a set of Greenland Sea acoustic tomography data provided by Woods Hole Oceanographic Institution this thesis investigated the importance of incorporating acoustic path changes in the construction of the ... |
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| Laboratory Studies of Exchange Between a Polar and a Subpolar Basin, |
MAR 1992 |
|
| Authors:
Kenneth Hunkins; LAMONT-DOHERTY GEOLOGICAL OBSERVATORY PALISADES NY
|
| Experiments on the exchange of a freshwater surface layer between two basins in a rotating tank demonstrate the contrasting roles of wind and buoyancy forces. Buoyancy-driven exchange occurs primarily in narrow boundary currents along the walls. Wind-driven exchange has a complex flow pattern with net transfer controlled by the sign of wind stress curl. Freshwater is transferred from the basin with positive curl to the one with negative curl. These ... |
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| Sea Ice Variability in the Nordic Seas, |
MAR 1992 |
|
| Authors:
Torgny Vinje; NORSK POLARINSTITUTT OSLO
|
| The variability of ice distribution in the Nordic Seas is considered for the period 1966-1988. The average maximum extension is found to be nearly constant for the whole area, except for the Iceland Sea where there is a reduction of about 33%. The average minimum extension shows a reduction between 13% and 40%, except for the Greenland Sea where the changes are insignificant. The largest reductions in the minimum extension ... |
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| Analysis of Drifting SOFAR Buoys in the Greenland Sea, 1989-1990 |
DEC 91 |
84 pages |
| Authors:
David H. McCarren; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| In an attempt to gain a better understanding of the intermediate depth circulation of the Greenland Sea, 16 SOFAR floats were launched into Fram Strait in 1988 and 1989. Between the fall of 1989 and the summer of 1990, five of these floats were tracked by autonomous listening stations (ALS) positioned to provide tracking in the southern portion of the Greenland Sea. One float (MZ86) provided tracking information for ten ... |
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| Monthly Mean Sea Ice Data from the Polar Ice Prediction System, the Regional Polar Ice Prediction System - Barents Sea and the Regional Polar Ice Prediction System - Greenland Sea |
NOV 91 |
144 pages |
| Authors:
P. G. Posey; R. H. Preller; NAVAL OCEANOGRAPHIC AND ATMOSPHERIC RESEARCH LAB STENNIS SPACE CENTER MS
|
| The Polar Ice Prediction System (PIPS), the Regional Polar Ice Prediction System-Barents (RPIPS-B) and the Regional Polar Ice Prediction System-Greenland (RPIPS-G) are all operational sea ice forecasting systems that have been run daily at the Fleet Numerical Oceanography Center (FNOC) since September 1987, June 1989 and October 1991, respectively. The basis for all three models is the Hibler ice model (Hibler, 1979;1980). The ice models are driven by monthly mean ... |
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| USNS BARTLETT Cruise to the Greenland Sea in August 1990 Data Report |
NOV 91 |
159 pages |
| Authors:
Robert G. Paquette; Robert H. Bourke; Marla D. Stone; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| As a component of the Greenland Sea Project, a hydrographic cruise was conducted on board the USNS BARTLETT during August 1990 in the southern Greenland Sea to continue the study of the southern half of the Greenland Gyre (GG) and the Jan Mayen Current (JMC) that was begun with the BARTLETT cruise of September 1989, previously reported by Bourke et al. (1989, 1990, 1992) and by Blythe (1990). A total ... |
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| CTD, XBT, and XSV Data from the Greenland Sea: R/V Knorr Cruise 8809 (6 September-4 October 1988) and R/V Endeavor Cruise EN200 (3 August-10 September 1989). Department of State Cruises 88-18 and 88-120 |
OCT 91 |
122 pages |
| Authors:
C. M. Bader; B. M. Howe; J. A. Mercer; P. F. Worcester; B. D. Cornuelle; J. Lynch; UNIV OF WASHINGTON SEATTLE APPLIED PHYSICS LAB
|
| The profile data presented in this report were taken in support of two projects. The goals of the first, the Greenland Sea Project (GSP) tomography experiment, were (1) to study the processes that occur during convection and ventilation of the deep waters in the Greenland Sea, and (2) to study the dynamics of the wind-driven Greenland Sea gyre. The goals of the Moving Ship Tomography (MST) project are (1) to ... |
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| Sediment Flux, East Greenland Margin |
17 SEP 91 |
18 pages |
| Authors:
J. T. Andrews; K. M. Williams; COLORADO UNIV AT BOULDER INST OF ARCTIC AND ALPINE RESEARCH
|
| We investigated sediment flux across an ice-dominated, high latitude continental margin, using cores from the East Greenland Shelf (ca. 68 deg N). Density, weight percentages of the various sediment components, and sediment/age relations (AMS C- 14 dates) were investigated from cores collected 1988 and 1990. High-resolution DTS Huntec surveys indicated 10-20 m of acoustically transparent sediment. Maximum core length was 3 m and most of the gravity cores were between ... |
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| Acoustic Tomography in the Greenland Sea |
JUN 91 |
64 pages |
| Authors:
John E. Joseph; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| A six transceiver ocean acoustic tomography array was deployed to monitor ocean ventilation and circulation over the 1988-89 winter cooling season. A stochastic inverse method computer code which attains a solution by minimizing mean square error is used to perform inversions of the Greenland Sea tomography data. A computer simulated ocean is used to evaluate various aspects of system performance. We first consider the advantages and problems associated with using ... |
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| Geology and Geophysics Program Summary for FY90. SEAMARC II investigation of the Northern Norwegian-Greenland Sea: Program 1990 and Expansion |
MAR 91 |
5 pages |
| Authors:
Alexander N. Shor; Kathleen Crane; Christian de Moustier; HAWAII INST OF GEOPHYSICS HONOLULU
|
| The high-latitude northern Norwegian-Greenland Sea and the adjacent part of the Arctic Ocean north of Spitsbergen comprise an unequaled natural laboratory for the study of several important processes involving the generation and/or modification of sea-floor topography, subbottom structure, and material properties. These processes, active now or in the geologically recent past, include (1) tectonism (faulting), volcanism, magma intrusion into rift valley seafloor sediments; (2) erosion and redeposition of sediment by ... |
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| Meteorological Features during Phase 1 of the Coordinated Eastern Arctic Experiment (CEAREX) from 17 September 1988 to 7 January 1989 |
MAR 91 |
98 pages |
| Authors:
Stephanie W. Hamilton; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The synoptic and mesoscale meteorological conditions were analyzed for Phase I of the Coordinated Eastern Arctic Experiment (CEAREX) from 17 September 1988 to 7 January 1989. Meteorological observations from a research ship (R/V Polarbjoern), an array of drifting buoys and satellite imagery from DMSP and NOAA satellites were the primary tools for analysis. Several short periods of high cyclone activity followed by long periods of high pressure dominated the weather ... |
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| Sea MARC II Investigation of the Norwegian-Greenland Sea |
JAN 91 |
8 pages |
| Authors:
Christian de Moustier; SCRIPPS INSTITUTION OF OCEANOGRAPHY LA JOLLA CA MARINE PHYSICAL LAB
|
| More than 80,000 sq km of SeaMARC II imagery was obtained in the northern Norwegian-Greenland Sea during October and November, 1989. Regions insonified included the Bjorneya Fan, a transect at 73 deg N from the continental margin to the Mohns Ridge, an along axis section of the entire Knipovich Ridge (the slowest spreading center in the world), the Molly Deep, the Spitsbergen Transform Fault, a portion of the Yermak Plateau ... |
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| The Jan Mayen Current and the Deep Waters of the Greenland Basin |
SEP 90 |
161 pages |
| Authors:
Robert F. Blythe; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| During Sep 1989 the USNS BARTLETT occupied a dense array of 48 high- quality CTD stations in the Greenland Basin to characterize the Jan Mayen Current (JMC) system as part of the Greenland Current (EGC) waters in the form of a surface Polar Water (PW) tongue, a near-surface (approx 50m) core of modified PW, and an intermediate (approx 100m) core of Atlantic Water displaced approx 75 km northward of the ... |
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| USNS BARTLETT Cruise to the Greenland Sea in September 1989 |
JUL 90 |
130 pages |
| Authors:
Robert H. Bourke; Robert F. Blythe; Robert G. Paquette; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| As a component of the Greenland Sea Project, a hydrographic cruise was conducted on board the USNS BARTLETT during September 1989 in the southern Greenland sea to characterize the water mass structure and circulation features of the Jan Mayen Current (JMC). A total of 48 high-quality CTD stations were occupied to depths of 1000 m; five stations extended to 3000m or more. Five north-south tending transects permitted tracking of the ... |
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| Upper Ocean Internal Waves in the Marginal Ice Zone of the Northeastern Greenland Sea |
15 JUN 90 |
|
| Authors:
Eric G. Eckert; Theodore D. Foster; CALIFORNIA UNIV SANTA CRUZ
|
| Oceanographic measurements obtained in the northeastern Greenland Sea-Fram Strait region were studied to characterize internal wave activity in the MIZ of the Arctic Ocean. Experiment were performed with an array of horizontally separated currents meters and a CTD instrument in 1984. Spectra of horizontal and vertical motion show that within the frequency range from the inertial frequency to 3 cph the MIZ internal wave field is similar in spectral shape ... |
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| Preliminary Cruise Report of USNS Bartlett to the Greenland Sea in September 1989 |
DEC 89 |
46 pages |
| Authors:
Robert H. Bourke; Robert F. Blythe; Robert G. Paquette; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| As a component of the Greenland Sea Project, a hydrographic cruise was conducted on board the USNS BARTLETT during September 1989 in the southern Greenland Sea to characterize the water mass structure and circulation features of the Jan Mayen Current (JMC). A total of 48 high-quality CTD stations were occupied to depths of 1000 m; five stations extended to 3000m or more. Five north-south tending transects permitted tracking of the ... |
|
| Forecasters Handbook for the Arctic |
OCT 89 |
364 pages |
| Authors:
Frank S. Sechrist; Robert W. Fett; Dennis C. Perryman; NAVAL ENVIRONMENTAL PREDICTION RESEARCH FACILITY MONTEREY CA
|
| Weather and ice conditions for the Arctic seas--Beaufort Sea, Greenland Sea, Norwegian Sea, Barents Sea, Kara Sea, Laptev Sea, East Siberian Sea, Sea of Okhotsk, Baffin Bay, and Davis Strait--and major land forms and islands are described. This work is a complete revision of the 1962 version and contains quick-reference material for operational forecasters as well as background material to enhance further understanding of Arctic phenomena. Satellite imagery case studies ... |
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| Arctic Studies with Coupled Ice-Ocean Models |
OCT 89 |
6 pages |
| Authors:
Alex Warn-Varnas; Rick Allard; Steve Piacsek; NAVAL OCEANOGRAPHIC AND ATMOSPHERIC RESEARCH LAB STENNIS SPACE CENTER MS
|
| The upper ocean is modeled in the framework of a three dimensional mixed-layer approximation and is coupled to the Hiber thermodynamic dynamic ice model. Two different modeling approaches are used for the interior ocean. In one, the geostrophic velocity is obtained from an inverse, Beta-spiral, type of model. In another, the barotrophic velocity is calculated prognostically. Topography is included in both approaches. The model is initialized form Levitus climatology and ... |
|
| Present Methods of Data Assimilation in the U.S. Navy's Sea Ice Forecasting Models |
OCT 89 |
6 pages |
| Authors:
Ruth H. Preller; Pamela G. Posey; NAVAL OCEANOGRAPHIC AND ATMOSPHERIC RESEARCH LAB STENNIS SPACE CENTER MS
|
| The U.S. Navy presently has two sea ice forecasting systems running on a daily operational schedule at the Fleet Numerical Oceanography Center. The first forecast system, the Polar Ice Prediction System (PIPS), covers the Arctic basin, The Barents Sea and the Greenland Sea using 125 km grid resolution. The second model, the Regional Polar Ice Prediction System-Barents (RPIPS-B), cover the Barents Sea and western have of the Kara Sea using ... |
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| Navy Tactical Applications Guide. Volume 8. Weather Analysis and Forecast Applications. Part 1. Arctic: Greenland/Norwegian/Barents Seas. Meteorological Satellite Systems |
SEP 89 |
364 pages |
| Authors:
Robert W. Fett; SCIENCE AND TECHNOLOGY CORP HAMPTON VA
|
| Environmentally the north polar region is one of the most active regions on the earth, and for ships and seamen, one of the most dangerous due to the combined effects of wind, sea state, and structural icing. It is also the region most neglected and difficult to analyze or forecast because of the sparsity of surface, upper-air, and ocean observations, and less than adequate numerical models. This volume illustrates, with ... |
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| The Variability of the Marine Atmospheric Boundary Layer in the Greenland Sea Marginal Ice Zone - A Case Study |
DEC 88 |
65 pages |
| Authors:
Karl L. Dinkler; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The vertical structure of the atmospheric boundary layer in the East Greenland Sea/Fram Strait marginal ice zone (MIZ) is examined for various wind flow regimes with respect to the ice edge. Rawinsonde profiles and surface observations collected from three ships during MIZEX-87 (20 March - 11 April 1987) served as the data set for the examination. Three specific flow regimes are discussed: On-ice flow, off-ice flow, and flow parallel to ... |
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| Spatial Variability of the Ambient Noise Field Associated with the Marginal Ice Zone and Its Relationship to Environmental Parameters |
DEC 88 |
112 pages |
| Authors:
Kristian P. Biggs; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| During July 1987 an acoustical experiment was conducted by the United States Naval Research Laboratory in the East Greenland Sea Marginal Ice Zone (MIZ). Ambient noise 'hot spots' or concentrated areas of relatively high noise levels were found along the ice edge using a towed array. Ambient noise levels were obtained on 27 and 28 July using AN/SSQ-57A and AN/SSQ-57XN5 calibrated sonobuoys. The temperature structure of the area was determined ... |
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| Predictability of Ice Concentration Anomalies in the High Latitudes of the North Atlantic Using a Statistical Approach |
DEC 88 |
94 pages |
| Authors:
Katharine S. Garcia; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| Based on a 27 year data record from the COADS and SEIC data sets, a statistical analysis of ice concentration, sea surface temperature (SST), air temperature, U and V wind components, and sea level pressure anomaly data was conducted for five locations in the ice-covered waters of the North Atlantic. Spectral densities and autocorrelations of the time series for each variable were calculated to establish a measure of persistence and ... |
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| High-Performance Liquid Chromatography (HPLC) Measurements of Phytoplankton Pigment Distributions of Ocean Waters |
NOV 88 |
34 pages |
| Authors:
C. C. Trees; SCRIPPS INSTITUTION OF OCEANOGRAPHY LA JOLLA CALIF INST OF MARINE RESOURCES
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| Unit the application of high-performance liquid chromatography (HPLC) to phytoplankton pigment analysis, it was difficult to quantitatively measure these pigment compounds. HPLC, the state-of-the-art method for the separation and quantification of photosynthetic pigments, is detailed in this report. HPLC reduces interferences caused by overlapping absorption and fluorescence bands of various pigments. HPLC-derived pigment distributions were measured in the upper 200 meters during two NOSC-sponsored cruises on the USNS LYNCH on ... |
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| European Science Notes Information Bulletin (ESNIB) Reports on Current European/Middle Eastern Science |
NOV 88 |
48 pages |
| Authors:
C. J. Fox; OFFICE OF NAVAL RESEARCH LONDON (UNITED KINGDOM)
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| The ESNIB is a compilation of reports on recent developments in European science. Partial contents: Acoustic research activity in Denmark; West German research on the Social Surveys; An international workshop on artificial intelligence; Applied mathematics, energetics, and material forming at three ENSMP centers in Sophia-Antipolis, France; The Greenland Sea Project and the Technical Univ. of Denmark; Remote sensing--The 1988 International Geoscience and Remote Sensing Symposium; The UK's Inst. of Physics ... |
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Reports by Keyword(s)
GREENLAND SEA
