| Development and Results of a Northern Sea Route Transit Model |
MAY 96 |
114 pages |
| Authors:
Nathan D. Mulherin; Duane T. Eppler; Tatiana O. Proshutinsky; L. D. Farmer; Orson P. Smith; COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
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 | For a Corps of Engineers reconnaissance study, we developed a numerical model to estimate the time needed for various ship types to transit the Russian Northern Sea Route. We simulated liquid bulk, dry bulk, and container ship transits during the months of April, June, August, and October. In the model, probability distributions for various ice, ocean and atmospheric inputs are exercised by a Monte Carlo algorithm to generate combinations of ... |
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| Interpretation of Passive Microwave Imagery of Surface Snow and Ice: Harding Lake, Alaska |
JUN 91 |
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| Authors:
Rae A. Melloh; Duane T. Eppler; L. D. Farmer; Lawrence W. Gatto; Edward F. Chacho; COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
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 | This report presents interpretations of snow and ice on Harding Lake, Alaska, using 33.6-GHz passive microwave imagery acquired from 1500 m on 8 and 11 March 1988, when snow conditions were dry and wet, respectively. Field data used include an aerial video mosaic, ice column descriptions, snow observations and an impulse radar trace. Our results show that low-altitude passive microwave imagery is a promising method for remote/field investigation of large-scale ... |
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| Navy-NASA SSM/I Validation Experiment KRMS Data Products |
FEB 91 |
55 pages |
| Authors:
D. T. Eppler; L. D. Farmer; NAVAL OCEANOGRAPHIC AND ATMOSPHERIC RESEARCH LAB STENNIS SPACE CENTER MS
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| The Navy Ka-band Radiometric Mapping System (KRMS) was used to acquire high resolution passive microwave imagery of sea ice in the Bering, Chukchi, and Beaufort Seas during the joint Navy-NASA SSM/I validation experiment in March 1988. Additionally, imagery of rivers and lakes was acquired in the vicinity of Fairbanks, Alaska, on two different days during this period. Information presented here constitutes an index to digital tapes of KRMS imagery acquired ... |
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| Navy-NASA SSM/I Validation Experiment KRMS Data Products |
FEB 91 |
55 pages |
| Authors:
D. T. Eppler; L. D. Farmer; NAVAL OCEANOGRAPHIC AND ATMOSPHERIC RESEARCH LAB STENNIS SPACE CENTER MS
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| The Navy K-band Radiometric Mapping System (KRMS) was used to acquire high-resolution passive microwave imagery of sea ice in the Bering, Chukchi, and Beaufort Seas during the joint Navy-NASA SSM/I validation experiment in March 1988. Additionally, imagery of rivers and lakes was acquired in the vicinity of Fairbanks, Alaska, on two different days during this period. Information presented here constitutes an index to digital tapes of KRMS imagery acquired during ... |
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| Converting Digital Passive Microwave Radiances to Kelvin Units of Brightness Temperatures |
SEP 90 |
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| Authors:
L. D. Farmer; D. T. Eppler; A. W. Lohanick; NAVAL OCEAN RESEARCH AND DEVELOPMENT ACTIVITY STENNIS SPACE CENTER MS
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| The Ka-band Radiometric Mapping System (KRMS) has been utilized since 1983 to collect digital records of microwave radiances. Methods are presented for converting these digital radiances to appropriate units of brightness temperature. (R.H.) |
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| KRMS (K-Band Radiometric Mapping System) SSM/I Validation March 1988 Quick Look Report |
JAN 89 |
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| Authors:
L. D. Farmer; Duane T. Eppler; Bruce Heydlauff; D. Olsen; NAVAL OCEAN RESEARCH AND DEVELOPMENT ACTIVITY STENNIS SPACE CENTER MS
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| The primary objective of this mission was to provide high-re solution passive microwave imagery in support of the NASA SSM/I sea ice algorithm verification program. Four flights were flown, originating from Eielson AFB, Fairbanks, Alaska, over the Chukchi Sea, the Beaufort Sea, and the Bering Sea. The Ka-band Radiometric Mapping System (KRMS) was flown from 6 to 14 March 1988. Data were collected on each of four days during this ... |
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| KRMS (K(a)-band Radiometric Mapping System) GEOSAT - LIMEX '87 (Labrador Ice Margin Experiment) Data Products |
JUL 88 |
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| Authors:
D. T. Eppler; L. D. Farmer; NAVAL OCEAN RESEARCH AND DEVELOPMENT ACTIVITY STENNIS SPACE CENTER MS
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| The K sub a - band Radiometric Mapping System (KRMS) was used to acquire high resolution passive microwave imagery of sea ice in the East Greenland and Labrador Seas during March 1987. Images obtain in the East Greenland Sea supported NORDA's GEOSAT ice index validation experiment (Chase and Holyer, 1988); Labrador Sea images supported the Labrador Ice Margin Experiment (LIMEX) (McNutt et al., 1988). In addition, we acquire several images ... |
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| KRMS GEOSAT - LIMEX 1987 Data Products |
JUL 88 |
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| Authors:
D. T. Eppler; L. D. Farmer; NAVAL OCEAN RESEARCH AND DEVELOPMENT ACTIVITY ARLINGTON VA
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| The Ka-band Radiometric Mapping System (KRMS) was used to acquire high resolution passive microwave imagery of sea ice in the East Greenland and Labrador Seas during March 1987. Images obtained in the East Greenland Sea supported NORDA's GEOSAT ice index validation experiment; Labrador Sea images supported the Labrador Ice Margin Experiment (LIMEX). In addition, we acquired several image sets that show open ocean in the North Atlantic Ocean and East ... |
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| Digital Processing of Passive Ka-Band Microwave Images for Sea-Ice Classification |
MAY 84 |
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| Authors:
D. T. Eppler; L. D. Farmer; A. W. Lohanick; M. Hoover; NAVAL OCEAN RESEARCH AND DEVELOPMENT ACTIVITY NSTL STATION MS
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| The primary objective of NORDA's Ka-band Radiometric Mapping System (KRMS) program is to provide basic research needed for Navy development of an operational imaging system that can produce detailed information concerning ice conditions over broad regions of the Arctic. To this end, methods suitable for automated identification and classification of sea ice types and open water are being developed. An experimental plan has been formulated that will lead to an ... |
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| K-Band Radiometric Mapping of Sea Ice |
JAN 1983 |
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| Authors:
R. D. Ketchum Jr.; L. D. Farmer; J. P. Welsh Jr; NAVAL OCEAN RESEARCH AND DEVELOPMENT ACTIVITY NSTL STATION MS
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| The Ka-band radiometric mapping system (KRMS), an airborne 33.6 GHz passive microwave imager, was flown over sea ice in the Bering, Chukchi and Beaufort Seas and in the Canadian Archipelago. The data discussed was obtained on 14 and 16 May 1982. The system, as flown, measures the relative brightness temperature (T sub B) of the objects radiating toward the rotating antennae. Differences in T sub B appear to be related ... |
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| Physical Properties of Icebergs. Part I. Height to Draft Ratios of Icebergs. Part II. Mass Estimation of Arctic Icebergs. |
JUN 1976 |
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| Authors:
R. Q. Robe; L. D. Farmer; COAST GUARD RESEARCH AND DEVELOPMENT CENTER GROTON CONN
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| A study of height to draft ratios of icebergs near the Davis Strait reveals ratios which range from 1:1.28 to 1:10.56. The ratios of bergs dominated by their horizontal dimension, such as tabular or broken tabular icebergs, have average height to draft ratios of 1:4.46 and 1:4.26 respectively. Bergs with a more vertical nature, pinnacle or drydock bergs, have ratios averaging 1:2.31 and 1:2.41 respectively. The smallest ratios are found ... |
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| A Census of Marine Traffic in Long Island Sound Derived from Side-Looking Airborne Radar Data. |
SEP 1975 |
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| Authors:
J. A. McIntosh; L. D. Farmer; COAST GUARD RESEARCH AND DEVELOPMENT CENTER GROTON CONN
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| A side-looking airborne radar was used to map Long Island Sound from Block Island to the Throg's Neck Bridge during the period 23 through 26 August 1975 for the purpose of sampling the number of vessels underway at any one time as functions of the time of day and of the sector of the area. An average of 12 vessels were observed in this area during this period. (Author) |
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| A Census of Marine Traffic in a Selected Sector of the Lower Mississippi River Derived from Side-Looking Airborne Radar Data. |
SEP 1975 |
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| Authors:
J. A. McIntosh; L. D. Farmer; COAST GUARD RESEARCH AND DEVELOPMENT CENTER GROTON CONN
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| A side-looking airborne radar was used to map selected portions of the Lower Mississippi River System extending from Baton Rouge, LA, to the Passes, during the period 16 through 19 August 1975 for the purpose of sampling the number of vessels underway at any one time as functions of the time of day and of the sector of the area. An average of 218 vessels were observed in this area ... |
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| A Census of Marine Traffic in a Selected Sector of the Gulf Coast ICW Derived from Side-Looking Airborne Radar Data. |
MAR 1975 |
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| Authors:
J. A. McIntosh; L. D. Farmer; COAST GUARD RESEARCH AND DEVELOPMENT CENTER GROTON CONN
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| A side-looking airborne radar was used to map selected portions of the Gulf Coast ICW from a point east of Houma, LA, to a point west of Intracoastal City, La, during the period 21 through 24 February 1975 for the purpose of sampling the number of vessels underway at any one time as functions of the time of day and of the sector of the area. An average of 70 ... |
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| A Census of Marine Traffic in the Chesapeake Bay Derived from Side-Looking Airborne Radar Data. |
OCT 1974 |
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| Authors:
J. A. McIntosh; L. D. Farmer; COAST GUARD RESEARCH AND DEVELOPMENT CENTER GROTON CONN
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| A side-looking airborne radar was used to map selected portions of Chesapeake Bay during the period 4-9 September 1974, for the purpose of sampling the number of vessels underway at any one time as functions of the time of day and of the sector of the Bay. In the Norfolk/Portsmouth/Newport News area, a maximum of 35 vessels were observed to be underway at one time. This occurred at 2100 on ... |
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| A Census of Marine Traffic in the Delaware Bay Derived from Side-Looking Airborne Radar Data. |
OCT 1974 |
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| Authors:
J. A. McIntosh; L. D. Farmer; COAST GUARD RESEARCH AND DEVELOPMENT CENTER GROTON CONN
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| A side-looking airborne radar was used to map selected portions of Delaware Bay during the period 9-13 September 1974 for the purpose of sampling the number of vessels underway at any one time as functions of the time of day and of the sector of the Bay. In the Delaware Bay area, a maximum of 47 vessels were observed to be underway at one time. This occurred at 0100 on ... |
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| A Census of New York Harbor Marine Traffic Derived from Side-Looking Airborne Radar Data. |
JUL 1974 |
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| Authors:
J. A. McIntosh; L. D. Farmer; COAST GUARD RESEARCH AND DEVELOPMENT CENTER GROTON CONN
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| The purpose of the report is to document the findings of a census of New York Harbor marine traffic made during the period 15-21 November 1973. The purpose of the census was to obtain data for use by the Coast Guard on planning for a Vessel Traffic System for New York Harbor. A side-looking airborne radar SLAR was used to make the census so that data could be readily obtained ... |
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| Iceberg Classification Using Side Looking Airborne Radar, |
MAY 1972 |
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| Authors:
L. D. Farmer; COAST GUARD WASHINGTON D C
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| The Coast Guard has been experimenting with a Side Looking Airborne Radar for use in radar target classification by the International Ice Patrol. The report, which was prepared for the International Ice Patrol, outlines the classification clues and techniques that appear valid at this time for classifying targets as either ice or other than ice. In addition, the report contains information on mensuration, mission planning and radar malfunctions to enhance ... |
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Reports by Author
