| Interpretation of Ice Imagery from Original and Modified Versions of a Real-Aperture SLAR, |
FEB 1978 |
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| Authors:
Moira Dunbar; DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)
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 | SLAR ice imagery obtained with a Motorola AN/APS-94D and a Doppler beam-sharpened modification of it designed and built for the Department of National Defence by the Communications Research Centre is evaluated and the modes compared. The imagery was obtained in October 1976 in the Arctic Ocean and Nares Strait as part of Exercise BRISK. It is concluded that in its present form the DBS modification is less useful than the ... |
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| Annual Report Number 9. |
01 DEC 1977 |
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| Authors:
Norbert Untersteiner; Gary Maykut; Seelye Mortin; Thomas Grenfell; Peter Kauffman; WASHINGTON UNIV SEATTLE DEPT OF ATMOSPHERIC SCIENCES
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| Research topics include: (1) growth and ablation of sea ice, (2) optical properties of sea ice, (3) desalination of sea ice, (4) thickness distribution of sea ice, (5) regional heat balance in the Central Arctic, and (6) improvement of ice forecasting equations. |
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| Arctic Under-Ice Roughness. |
DEC 1977 |
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| Authors:
Leonard A. LeSchack; David C. Chang; DEVELOPMENT AND RESOURCES TRANSPORTATION CO SILVER SPRING MD
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| Under-ice profile records obtained in the Arctic Ocean during the winter 1960 cruise of the USS SARGO and the 1960 and 1962 summer cruises of the USS SEADRAGON have been digitized and the Root-Mean-Square (RMS) depths have been computed (The RMS ice depth is a valuable parameter for Arctic acoustic studies as well as a good indicator of under-ice roughness). Thirteen representative profile segments varying in length from 50-250 miles ... |
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| Oscillations of the Ice Cover Excited by Internal Waves of the Arctic Ocean (Kolebaniya Ledyanogo Pokrova, Obuslovlennyye Vnutrennimi Volnami Ledovitogo Okeana), |
06 SEP 1977 |
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| Authors:
V. N. Smirnov; NAVAL INTELLIGENCE SUPPORT CENTER WASHINGTON D C TRANSLATION DIV
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| In 1970 tiltmeters installed on Drift Station North Pole 20 recorded oscillations of the ice cover with periods of up to 25 minutes. Preliminary results of the investigation indicate that these oscillations are excited by internal waves generated in the highly stratified waters of the Arctic Ocean Basin. (Author) |
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| Free Internal Waves in Ice-Covered Seas (O Svobodynkh Vnutrennikh Volnakh v More, Pokrytom ldom), |
06 SEP 1977 |
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| Authors:
V. N. Smirnov; V. G. Savchenko; NAVAL INTELLIGENCE SUPPORT CENTER WASHINGTON D C TRANSLATION DIV
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| The results of full-scale observations and theoretical calculations provide a basis to assume that two classes of free oscillations can simultaneously appear in a heterogeneous sea in the presence of an ice cover: internal ones and surface elastic gravity waves. In this case the internal waves cause oscillations of the ice cover which can be recorded using the appropriate apparatus. |
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| Depositional Environments in the Colville River Delta. |
JUL 1977 |
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| Authors:
H. J. Walker; LOUISIANA STATE UNIV BATON ROUGE COASTAL STUDIES INST
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| The Colville River delta is growing northward into the Arctic Ocean at a point about 40 km west of Prudhoe Bay. Within the delta are a number of environments that owe their existence, characteristics and distribution to a variety of interrelated depositional and erosional processes. The subaerial portion (about 600 sq km in area) of the delta contains a number of distributary channels, a variety of lakes and marshes, extensive ... |
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| APL Arctic SEV Subsystem Development Program. |
JUN 1977 |
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| Authors:
T. Thompson; L. L. Warnke; JOHNS HOPKINS UNIV LAUREL MD APPLIED PHYSICS LAB
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| APL conducted a study to define the navigation, terrain surveillance, and communications subsystem requirements in developing a large, high-speed, long-range Arctic-based Surface Effect Vehicle (SEV). During 1970-1974, APL participated in a program to develop the technology required to use the SEV's potential as a high performance platform for Arctic operations. APL's task was to provide the obstacle-avoidance, navigation, and communications concepts and the design information for future Arctic SEV applications. ... |
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| Driller's Field Notes Subsea Permafrost Program. |
MAY 1977 |
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| Authors:
Robert I. Lewellen; ARCTIC INST OF NORTH AMERICA ARLINGTON VA
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| The Nordic Arc: A Vital Region. |
29 APR 1977 |
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| Authors:
Bertrand A. Handwork Jr; ARMY WAR COLL CARLISLE BARRACKS PA
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| The basic problems addressed are: the importance of the Nordic Arc, the role of the Army in that area, and how that role may best be accomplished. Data was gathered through a search of existing literature without recourse to classified publications. Initially, the growing importance of the Arctic is addressed, later focusing on the Nordic Arc - specifically: Iceland, Spitsbergen, the northern portions of Norway, Sweden and Finland, the Kola ... |
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| An Evaluation of Side Looking Radar Imagery of Sea Ice Features and Conditions in the Lincoln Sea, Nares Strait, and Baffin Bay. |
APR 1977 |
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| Authors:
R. D. Ketchum Jr; NAVAL OCEAN RESEARCH AND DEVELOPMENT ACTIVITY NSTL STATION MS
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| Evaluation of synthetic aperture radar sea ice imagery has shown that discrimination of first season ice types can be difficult due to ambiguous radar returns. It has been hypothesized that varying balances of ice thickness, snow depth, air temperature, and time will produce conditions at the snow-ice interface which are conducive to the development of radar reflective suraces with variable backscatter characteristics. The presence of this phenomenon was common in ... |
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| Arctic Radiation Fluxes--The Long Wave Radiation Transfer in ARctic Stratus Clouds. |
APR 1977 |
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| Authors:
K. O. L. F. Jayaweera; ALASKA UNIV COLLEGE GEOPHYSICAL INST
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| Stratus cloud cover over Barrow, AIDJEX camp 'Big Bear' and over the Beaufort Sea was derived for 1975 using surface and satellite observations. Contrary to the reported value of the consistently high long term summer mean cloudiness, the values for 1975 showed a period of complete lack of cloudiness. Comparison with the wind field suggests that a southerly component in the 700 mb winds corresponds to an increase in cloudiness ... |
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| High Resolution Observations of Under-Ice Morphology, |
31 MAR 1977 |
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| Authors:
Robert E. Francois; WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB
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| High resolution profiles of arctic under-ice topography were measured near Ice Island T-3, about 600 kilometers from the pole. A high frequency, narrow beam, profiling sonar carried by an unmanned, torpedo-like research submersible provided an ice elevation measurement each 38 cm along a guided path beneath the ice. Selected profiles that show normal, oblique, and nearly parallel traverses of pressure ridge keels are shown. Pressure ridges are shown to have ... |
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| Final Report on Contract N00014-67-A-0317-0010. |
01 MAR 1977 |
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| Authors:
Gunter Weller; ALASKA UNIV COLLEGE GEOPHYSICAL INST
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| During the report period, research efforts have concentrated on three general areas: (1) Collection of climatological radiation data in the Arctic Basin and at coastal stations along the Beaufort Sea coast; (2) Measurement and analysis of atmospheric turbidity and transmission of radiation, including Study of ice crystals and acoustic soundings of the boundary layer; and (3) study of the radiative properties and microphysics of Arctic stratus clouds, and their large-scale ... |
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| Compactness Effects on Drift of Arctic Pack Ice. |
MAR 1977 |
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| Authors:
S. I. Pai; M. M. Das; Huon Li; NAVAL OCEAN RESEARCH AND DEVELOPMENT ACTIVITY NSTL STATION MS
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| The exact equation of compactness of sea ice is derived from the two-phase flow theory. The equation is compared with other approximate equations of compactness of sea ice in the literature and the improvement on the understanding of compactness effect is shown. The semi-empirical formula obtained by using simplified solutions of Fel'zenbaum (1958), while agreeing well with the empirical formula for wind drift of ice, shows the effects of compactness ... |
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| Thermal Requirements of Divers and Submersibles in Arctic Waters, |
1977 |
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| Authors:
L. A. Kuehn ; T. J. Smith ; D. G. Bell; DEFENCE AND CIVIL INST OF ENVIRONMENTAL MEDICINE DOWNSVIEW (ONTARIO)
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| Annual Report Number 8. |
01 DEC 1976 |
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| Authors:
WASHINGTON UNIV SEATTLE DEPT OF ATMOSPHERIC SCIENCES
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| Research topics studied during the reporting period include: (1) Growth and ablation of sea ice; (2) Optical properties of sea ice; (3) Desalination of sea ice, (4) Thickness distribution of sea ice, (5) Generation of internal waves in the ocean by pressure ridge keels, and (6) Formation of ice in a wave field. |
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| Deployment and Retrieval of Linear Hydrophone Arrays and Seismometers Under Arctic Ice. |
SEP 1976 |
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| Authors:
Shelton M. Gay Jr.; John J. Nelligan; MAR ASSOCIATES INC ROCKVILLE MD
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| Methods are studied for placement and retrieval of instrumentation from beneath the Arctic ice pack. The instrumentation considered consists of long, linear hydrophone arrays (seismic arrays) and ocean-bottom seismometers and gravimeters. It is assumed that operations are conducted from an ice-locked ship having both complete oceanographic support and cable handling capabilities. An inverted two-legged mooring (by which the array is suspended beneath the ice in a horizontal position) is selected ... |
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| Oceanography, Mesostructure, and Currents of the Pacific Marginal Sea-Ice Zone - MIZPAC 75. |
SEP 1976 |
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| Authors:
William John Zuberbuhler; John Alexander Roeder; Robert G. Paquette; Robert H. Bourke; NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF
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| Currents and complex temperature inversions observed in the Chukchi Sea during MIZPAC 75 were investigated in an effort to define the mechanisms for the formation of mesostructure. Data was collected using a conductivity-temperature-depth recorder and a Savonius rotor current meter. Whereas in previous MIZPAC cruises mesostructure was typically observed in the vicinity of ice margins, during MIZPAC 75 it was primarily found in regions of diffuse ice floes and in ... |
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| Evidence of Subarctic Water Mass Intrusions at Ocean Weather Station November. |
SEP 1976 |
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| Authors:
John Francis Pfeiffer; Robert H. Bourke; NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF
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| A divergent heat budget equation which included the effects of surface heat flux, horizontal and vertical advection, and horizontal divergence on the near-surface heat content was used to examine the role of thermal advection in the upper 250m of the water column at Ocean Weather Station NOVEMBER. This station is located on the southern boundary of the transition zone separating the Subarctic water mass from the Subtropic water mass. Values ... |
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| Arctic Research in Environmental Acoustics (AREA) Technical Report No. 2: Preliminary Radio Performance Predictions for the Arctic Environmental Buoy (AEB). |
07 JUN 1976 |
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| Authors:
Beaumont M. Buck; POLAR RESEARCH LAB INC SANTA BARBARA CALIF
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| Consideration is being given to adapting the high-frequency ARctic Environmental Buoy (AEB) orginally developed for the Arctic Ice Dynamics Joint Experiment (AIDJEX), to a new concept for long-term, wide-area environmental data collection in the Arctic Ocean. The AEB was originally applied to a small area; under this new concept a number of small, widely dispersed drifting stations will be established on pack ice. The concept is called 'Manned-UnManned Multipurpose Environmental ... |
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| Thickness and Roughness Variations of Arctic Multiyear Sea Ice, |
JUN 1976 |
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| Authors:
S. F. Ackley; W. D. Hibler III; F. K. Kugzruk; A. Kovacs; W. F. Weeks; COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
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| Three surface elevation and ice thickness profiles obtained during the 1972 Arctic Ice Dynamics Joint Experiment on a multiyear ice floe were analyzed to obtain relationships between surface elevation, thickness and physical properties of the ice. It was found that for ice freeboards from 0.10 m to 1.05 m above sea level a linear relationship between ice density and freeboard could be postulated. The equation for the regression line is: ... |
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| An Oceanographic Survey of Fury and Hecla Strait. |
MAY 1976 |
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| Authors:
Harold V. Serson; DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)
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| A total of 27 days of current and tide data and the results of 13 oceanographic stations obtained in Fury and Hecla Strait and its approaches are presented and an attempt made to explain some of the observed characteristics of these waters. (Author) |
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| Oceanographic Investigation of the Marginal Sea-Ice Zone of the Chukchi Sea--MIZPAC 74. |
MAY 1976 |
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| Authors:
Robert G. Paquette; Robert H. Bourke; NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF
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| Continuous profiles of temperature and salinity (STD observations) were made in the shallow (approximately 45 m) Bering and Chukchi Seas in July 1974 as part of the MIZPAC program. In addition to measurements in ice-free waters, seven closely spaced crossings of the sea-ice margin were made along with two crossings of the Alaskan coastal zone. In all, 111 STD stations and approximately 100 XBT drops were made for which graphs ... |
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| Perennially Frozen Rocks of the Coastal Zone of Yakutia, |
FEB 1976 |
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| Authors:
N. F. Grigorev; COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
|
| The monograph describes the conditions for formation, propagation, structure and temperature of perennially frozen ground in the coastal zone of Yakutia. Particular attention is devoted to the dynamics of permafrost processes in particular the formation of present day layers of perennially frozen ground in the coastal part of the floor of Arctic seas and also under lakes and rivers in Northern Yakutia. |
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| Water, Heat, and Salt Transports through Nares Strait, Ellesmere Island, |
13 JAN 1976 |
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| Authors:
H. Eric Sadler; DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)
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| Arctic Research in Environmental Acoustics (AREA) Technical Report No. 1: The SYNRAMS Ice Station. |
01 JAN 1976 |
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| Authors:
S. P. Burke; B. M. Buck; POLAR RESEARCH LAB INC SANTA BARBARA CALIF
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| A low power, unattended, ice station for collecting data has been developed to collect synoptic environmental data in polar regions for a period of two years. An array of 10 of these ice stations was installed 250-550 nautical miles north of the Alaskan coast during the spring of 1975. In each station, 24 hours worth of the most recent data, made up of eight 32-bit words, are retained in memory ... |
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| Time Series of Temperature Microstructure in the Arctic Ocean. |
OCT 1975 |
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| Authors:
D. E. Amstutz; V. T. Neal; ARCTIC INST OF NORTH AMERICA ARLINGTON VA
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| After describing the apparatus used for sampling ocean microstructure from an ice island in the Arctic Ocean, this report discusses vertical thermal microstratification at the upper and lower limits of the Atlantic water on the basis of a spectral analysis of the data. It recommends further analyses of the data which could provide a better understanding of internal wave propagation within a stepped thermal structure. |
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| Arctic and the Antarctic (Arktika i Antarktida), |
AUG 1975 |
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| Authors:
N. N. Briazgin; E. S. Korotkevich; COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
|
| This excerpt from a book on world water balance describes the arctic and antarctic water supply specifically. It describes in great detail the effect of glacier runoff, geographical and topographic characteristics as well as the climatological influence on water balance in these areas. (Author) |
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| Ocean Current Observations at the AIDJEX 1972 Main Camp. (1) The Oceanic Boundary Layer and Ice-Water Stress During AIDJEX 1972. (2) An Estimate of Internal Wave Drag on Pack Ice. (3). |
DEC 1974 |
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| Authors:
Kenneth Hunkins; Myron Fliegel; LAMONT-DOHERTY GEOLOGICAL OBSERVATORY PALISADES N Y
|
| ;Contents: Ocean current observations at the AIDJEX 1972 main camp; The ocean boundary layer and ice-water stress during AIDJEX 1972; and An estimate of internal wave drag on pack ice. |
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| Oceanography of the Norwegian and Greenland Seas and Adjacent Areas. Volume 2. Survey of 1870-1970 Literature. |
15 JUN 1974 |
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| Authors:
Sven Trangeled; SACLANT ASW RESEARCH CENTRE LA SPEZIA (ITALY)
|
| A general description of oceanographic conditions in the areas is followed by a historical account of the investigations made, with emphasis on surveys performed during and after the International Geophysical Year (1957-1958). The literature titles that have been collected alphabetically and chronologically in Vol. 1 are here collected by subject in a series of appendices. (Author) |
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| Greenland Sea Studies. |
31 MAY 1974 |
|
| Authors:
Knut Aagaard; WASHINGTON UNIV SEATTLE DEPT OF OCEANOGRAPHY
|
| This report is in three parts. Part I is a short paper co-authored with Clark Darnall and Paul Greisman, summarizing the mooring and current measurements in the Greenland-Spitsbergen Passage. Part II is a paper on the Arctic heat and mass budgets, co-authored with Paul Greisman and based on large part on the 1971-72 current measurements. Part III presents the current measurements themselves. |
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| Report of the Arctic Ice Observing and Forecasting Program-1971. |
MAY 1974 |
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| Authors:
Peter A. Mitchell; NAVAL OCEANOGRAPHIC OFFICE WASHINGTON D C
|
| This report of the ice program conducted during 1971 in the NOrth American Arctic, the last of this series, was conducted by the Naval Oceanographic Office. Methods of collection and dissemination of ice data, ice forecasting, forecast verification, and interpretation of satellite ice observations are discussed. Sea ice distribution in the eastern arctic was generally normal or slightly heavier than normal. Expected dates for escorted and unescorted entry into 5 ... |
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| Growth Cycle and Related Vertical Distribution of the Thecosomatous Pteropod Spiratella ('Limacina') helicina in the Central Arctic Ocean, |
29 APR 1974 |
|
| Authors:
H. A. Kobayashi; UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF BIOLOGICAL SCIENCES
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| The Influence of Hydrometeorological Conditions on Commercial Concentrations of Whales in the Antarctic (O Vlyanic Gidrometeorologicheskoi Obstanovki ma Promyslovie Kontsentratsii Kitov v Antarktike), |
NOV 1973 |
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| Authors:
Yu. P. Zavernin; NAVAL OCEANOGRAPHIC OFFICE WASHINGTON D C
|
| Accurate prediction of whale concentration areas can enhance commercial whaling efforts. In the Antarctic, baleen whales concentrate at feeding grounds where there is an abundance of zooplankton (euphausiids). Cyclonic circulation in the atmosphere determines corresponding circulation in the hydrosphere. The result is the upwelling of warm deep waters rich in zooplankton. Wind direction is also a factor in predicting whale movements. Whales move against the wind, and the predominance of ... |
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| World Wide Distribution of Published Ambient Noise Data. |
OCT 1973 |
|
| Authors:
Barry A. Gold; Joseph X. Palumbo; NAVAL OCEANOGRAPHIC OFFICE WASHINGTON D C
|
| The report presents the numerical distribution of reports contained in the AESD computerized ambient noise bibliography as a function of ocean areas. A numerical break down according to topics directly relating to ambient noise is also given. (Author) |
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| The Water Balance in Arctic and Subarctic Regions. Annotated Bibliography and Preliminary Assessment. |
JUN 1973 |
|
| Authors:
S. Lawrence Dingman; COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
|
| The hydrological cycle plays a central role in geobiological and near-surface geological processes and in the energy balance of the earth. It is of crucial importance to many vital practical problems relative to man and his environment. This is especially true in arctic and subarctic regions, where knowledge of hydrologic processes is particularly limited. The introductory section of this report discusses the global hydrologic cycle and summarizes current estimates of ... |
|
| Sea Ice Growth in Potential Arctic Minefield Areas. |
16 APR 1973 |
19 pages |
| Authors:
Donald J. Gerson; Rudolph J. Perchal; NAVAL OCEANOGRAPHIC OFFICE WASHINGTON D C
|
 | An empirical method of determining the date of initial ice formation using daily air temperatures is described and applied to Zubov's and Kolesnikov's equations to determine day-to-day growth in ice thickness. Several methods are used also to estimate ice drift and disintegration. (Author) |
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| Studies of the Solar and Terrestrial Radiation Fluxes Over Arctic Pack Ice. |
MAR 1973 |
|
| Authors:
Bjorn E. Holmgren; Gunter E. Weller; ALASKA UNIV COLLEGE GEOPHYSICAL INST
|
| The report describes some measurements carried out during 1972 AIDJEX that have not been accounted for in earlier reports under this contract. Determinations of the turbidity coefficient gave a mean value of 0-078, indicating that the dust scattering is considerable in the Arctic atmosphere. Incoming and outgoing short-wave and long-wave radiation fluxes were monitored by 4 Eppley precision pyranometers. The variations of these fluxes and of the radiation balance are ... |
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| Drift Station Biology: Zooplankton Taxonomy and Sorting Programs. |
JAN 1973 |
45 pages |
| Authors:
Hector R. Fernandez; UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF BIOLOGICAL SCIENCES
|
| The taxonomic studies of the USC Arctic Project are briefly summarized. This report includes a description of the practical taxonomic guides, the sorting program and studies which were derived from the sorting program. This work has two main objectives, first the identification of Arctic zooplankton, and second a more detailed study of the biology of some of the organisms, to form the basis for biochemical and physiological investigations. The report ... |
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| Long Range Acoustic Transmission Loss in the Northern Denmark Strait, |
10 OCT 1972 |
|
| Authors:
David L. Bradley; Gabriel M. Colvin; NAVAL ORDNANCE LAB WHITE OAK MD
|
| Long range acoustic transmission loss measurements were made in the marginal ice zone of the northern Denmark Strait area using two aircraft. One aircraft flew prearranged tracks, dropping standard U. S. Navy explosive charges, while the second aircraft remained in the area of deployed calibrated sonobuoys, acting as a receiving platform. Received signals were recorded broadband aboard the monitoring aircraft. These broadband recordings were analyzed by filtering, squaring and integrating ... |
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| Taxonomic Guides to Arctic Zooplankton (VI): Appendicularians of the Central Arctic Mysids of the Arctic Ocean and Confluent Seas Field Guide to Arctic Zooplanktonic Crustaceans Ostracods of the Central Arctic. |
OCT 1972 |
56 pages |
| Authors:
Yuk Maan Leung; UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF BIOLOGICAL SCIENCES
|
| The compilation is composed of information on the five species of ostracods and five species of appendicularians found amongst central Arctic zooplankton: mysids from the central Arctic and peripheral seas; and a general guide to Arctic zooplanktonic crustaceans. Each guide contains dichotomous keys and complementary illustrations, special notes on individual species, and selected references to literature pertaining to the included groups. (Author Modified Abstract) |
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| Taxonomic Guides to Arctic Zooplankton (V): Pelagic Polychaetes of the Central Arctic Basin. |
OCT 1972 |
|
| Authors:
Douglas R. Yingst; UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF BIOLOGICAL SCIENCES
|
| The compilation presents a detailed consideration of the different adult pelagic polychaetes found in the central Arctic Ocean. Emphasis has been placed on the familial level as information on the group is still inadequate to justify construction of generalized keys to species. Provided also are a discussion of basic polychaete morphology and terminology used in the guide, illustrations, dichotomous keys, and hints on methodology for handling preserved specimens. Selected references ... |
|
| A Preliminary Investigation of the Feasibility of Ice-Mounted Geophone Sonar Arrays. |
APR 1972 |
|
| Authors:
Beaumont M. Buck; Bruce K. Murdock; GENERAL MOTORS CORP SANTA BARBARA CALIF DELCO ELECTRONICS DIV
|
| The feasibility of replacing hydrophone arrays in water by geophone arrays in ice for use in passive sonar systems is investigated. Past work in deepwater, Spring conditions in the Arctic indicated that horizontal geophones implanted in pack ice have better signal-to-noise ratios than hydrophones in water below the ice, for requencies below about 30Hz. This study took into consideration the problem of possible multipath propagation in the ice and the ... |
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| Stability and Convergence Studies on a Numerical Model of the Arctic Ocean. |
MAR 1972 |
|
| Authors:
Robert Cecil Willems; NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF
|
| Complete solutions to the equations of motion are possible using numerical schemes. The model developed by Galt (1972) was investigated for stability and convergence. A series of runs indicated that the scheme, the three level Adams-Bashforth method for the new value of vorticity and then the successive over-relaxation method for the stream function, was stable for transport not exceeding 100 Sverdrups and a time step of one-half pendulum day. Convergence ... |
|
| The Identification of Naval Fuels and Natural Fluorophors in Sea Water by Fluorescence Spectrometry. |
MAR 1972 |
|
| Authors:
Hugh W. Howard Jr; NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF
|
| Fluorescence and Excitation spectra of Navy Standard Fuel Oil (NSFO), Navy Distillate Fuel (ND), Diesel Fuel and Navy Aircraft fuels (JP-4 and JP-5) were obtained. Excitation spectra and fluorescence spectra are characteristic and may allow selective identification of these fuels. Quantitative determinations by fluorescence analysis of ND fuel oil extracted from sea water samples, with cyclohexane, showed saturation values of approximately 11 ppm. An all glass, in-situ vacuum filtering water ... |
|
| BIRDS EYE 3-71, 2-25 March 1971. |
NOV 1971 |
|
| Authors:
R. F. Freeman; NAVAL OCEANOGRAPHIC OFFICE WASHINGTON D C
|
| BIRDS EYE 3-71 was a regularly scheduled ice reconnaissance mission covering the North American sector of the Arctic Ocean and included Denmark Strait and Greenland Sea between 2 and 25 March 1971. An airborne laser profilometer system was used to obtain ice surface profiles. An infrared scanner and aerial camera were used to assess ice conditions. Ice observations were made under daylight or twilight conditions. Data were collected at Camp ... |
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| Birds Eye 5-70, 4-14 November 1970. |
OCT 1971 |
|
| Authors:
R. F. Freeman; H. J. Agee; NAVAL OCEANOGRAPHIC OFFICE WASHINGTON D C
|
| BIRDS EYE 5-70 was a regularly scheduled Arctic Ocean ice reconnaissance mission covering the North American sector of the Arctic Ocean including Baffin Bay and Davis Strait from 4 to 14 November 1970. An airborne laser profilometer system was used continuously over the Arctic Ocean to obtain ice surface profiles. Ice observations were collected under daylight conditions in low latitudes and in twilight or moonlight in high latitudes. (Author) |
|
| Measurements of Underwater Explosive Source Levels for Yields of 0.0012 to 126 Pounds. |
APR 1971 |
28 pages |
| Authors:
Beaumont M. Buck; Albert W. Magnuson; GENERAL MOTORS CORP SANTA BARBARA CALIF DELCO ELECTRONICS DIV
|
| The equivalence of using energy measurements for explosives and intensity for CW sources in the determination of underwater acoustic transmission loss has been previously investigated by Hasse and Stockhausen for one-pound TNT changes. It was concluded that use of Weston's theoretically derived energy source levels was satisfactory for this size charge. The ofjective of the present experiment was to investigate the applicability of Weston's predictions of energy source level for ... |
|
| The Physical Oceanography of the Northern Baffin Bay Region. |
JAN 1971 |
|
| Authors:
Robin Davie Muench; ARCTIC INST OF NORTH AMERICA WASHINGTON D C
|
| Baffin Bay Water is three-layered, consisting of cold near-surface and deep layers separated by a warmer mid-depth layer. The structure has undergone no net changes from 1928 to the 1960's, except for the possible warming in the mid-depth layer. Greater temperature extremes occur in the upper and mid-depth layers in northeastern than in northwestern Baffin Bay. The salinity of the upper layer is higher in northeastern than northwestern Baffin Bay. ... |
|
| Erdgezeiten-registrierungen in der Arktis: International Astro-Geo-Project Spitzbergen 1968/70 (Earth Tide Measurements in the Arctic. International Astro-Geo Project Spitzbergen 1968/70), |
1971 |
|
| Authors:
Manfred Bonatz; Paul Melchior; BELGIAN ROYAL OBSERVATORY UCCLE
|
| Some partial-tides in the horizontal earth-tide-spectrum can synchronously in both main-direction practically only be measured in the proximity of the poles. For vertical component the fort-nightly moon-wave there reaches one maximum which, with modern technics, seems possible to be measured. The aim of an international expedition to Spitzbergen ( =78 degrees N) in 1969/70 was the observation of these waves. It is reported about the performance of the research work ... |
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Reports by Keyword(s)
ARCTIC OCEAN
