Donald K Ljungblad
Biographic Data
| ID | 5591886 |
|---|---|
| NAME | Donald K Ljungblad |
| GIVEN NAMES | Donald K |
| FAMILY NAME | Ljungblad |
| SIGNATURE | LJUNGBLAD D K |
| AFFILIATIONS | Naval Information Warfare Center Pacific |
| VERIFIED | No |
| TOTAL WORKS | 4 |
| TOTAL CITATIONS | 0 |
| WORKS AS AUTHOR | 4 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1983 |
| LATEST PUBLICATION YEAR | 1988 |
| H-INDEX | 0 |
Observations on the Behavioral Responses of Bowhead Whales ( Balaena mysticetus ) to Active Geophysical Vessels in the Alaskan Beaufort Sea
The responses of bowhead whales to controlled approaches by geophysical vessels producing airgun blasts were observed during the course of four field experiments conducted in the Alaskan Beaufort Sea in September 1984. Behavioral responses included shorter surfacing and dive times, fewer blows per surfacing, longer blow intervals and subtle to overt changes in surface behaviors. Subtle behavioral responses occurred at 3.5 and 8.2 km with received…
Summer Distribution of Bowhead Whales, Balaena mysticetus , Relative to Oil Industry Activities in the Canadian Beaufort Sea, 1980-84
Aerial surveys in 1980-84 showed that summer distribution of bowheads in the Beaufort Sea varied markedly between years. Distribution varied both outside and within the "main industrial area" (MIA), the area of island construction, drilling and intensive ship and helicopter traffic. Numbers of bowheads in the MIA were high in 1980, lower in 1981, near zero in 1982 and very low in 1983-84. The few whales in the MIA in 1983-84 were mainly near its …
Bowhead Whales and acoustic seismic surveys in the Beaufort Sea
Seismic survey activities in the western Beaufort Sea, involving ships and sound production, were monitored in autumn 1982 for their possible effects on migrating Bowhead whales Balaena mysticetus . The study, begun in 1981 by die Minerals Management Service of the US Department of the Interior, covered offshore waters between the Alaskan coast and 72°N. Distribution, behaviour and numbers of whales were recorded, and procedures were established …
Killer Whales ( Orcinus orca ) Chasing Gray Whales ( Eschrichtius robustus ) in the Northern Bering Sea
Sixteen killer whales (Orcinus orca) were observed for 90 minutes as they approached and then chased gray whales (Eschrichtius robustus) in the Bering Sea north of St. Lawrence Island, Alaska. The killer whales swam in four discrete lines that blew synchronously as they approached an area in which gray whales were feeding. Once in the gray whales' feeding area, the killer whales broke into small groups and dispersed. The gray whales, which had be…
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Killer Whales ( Orcinus orca ) Chasing Gray Whales ( Eschrichtius robustus ) in the Northern Bering Sea
Sixteen killer whales (Orcinus orca) were observed for 90 minutes as they approached and then chased gray whales (Eschrichtius robustus) in the Bering Sea north of St. Lawrence Island, Alaska. The killer whales swam in four discrete lines that blew synchronously as they approached an area in which gray whales were feeding. Once in the gray whales' feeding area, the killer whales broke into small groups and dispersed. The gray whales, which had be…
Bowhead Whales and acoustic seismic surveys in the Beaufort Sea
Seismic survey activities in the western Beaufort Sea, involving ships and sound production, were monitored in autumn 1982 for their possible effects on migrating Bowhead whales Balaena mysticetus . The study, begun in 1981 by die Minerals Management Service of the US Department of the Interior, covered offshore waters between the Alaskan coast and 72°N. Distribution, behaviour and numbers of whales were recorded, and procedures were established …
Summer Distribution of Bowhead Whales, Balaena mysticetus , Relative to Oil Industry Activities in the Canadian Beaufort Sea, 1980-84
Aerial surveys in 1980-84 showed that summer distribution of bowheads in the Beaufort Sea varied markedly between years. Distribution varied both outside and within the "main industrial area" (MIA), the area of island construction, drilling and intensive ship and helicopter traffic. Numbers of bowheads in the MIA were high in 1980, lower in 1981, near zero in 1982 and very low in 1983-84. The few whales in the MIA in 1983-84 were mainly near its …
Observations on the Behavioral Responses of Bowhead Whales ( Balaena mysticetus ) to Active Geophysical Vessels in the Alaskan Beaufort Sea
The responses of bowhead whales to controlled approaches by geophysical vessels producing airgun blasts were observed during the course of four field experiments conducted in the Alaskan Beaufort Sea in September 1984. Behavioral responses included shorter surfacing and dive times, fewer blows per surfacing, longer blow intervals and subtle to overt changes in surface behaviors. Subtle behavioral responses occurred at 3.5 and 8.2 km with received…
Arctic and Antarctic ice dynamics (4 works) · Biology (4 works) · Fishery (4 works) · Geology (4 works) · Geology (4 works) · Marine animal studies overview (4 works) · Oceanography (4 works) · Oceanography (4 works) · Whale (4 works) · Arctic (3 works)