scholarly journals Major Features of the Summer Near-Surface Circulation of Western Baffin Bay, 1978 and 1979

ARCTIC ◽  
1982 ◽  
Vol 35 (1) ◽  
Author(s):  
D.B. Fissel ◽  
D.D. Lemon ◽  
J.R. Birch
Keyword(s):  
Near Surface ◽  
Baffin Bay ◽  
Surface Circulation

The near-surface circulation of the North Pacific using satellite tracked drifting buoys

1983 ◽  
Vol 88 (C12) ◽  
pp. 7507 ◽  
Author(s):  
Gerard J. McNally ◽  
William C. Patzert ◽  
A. D. Kirwan ◽  
Andrew C. Vastano
Keyword(s):  
North Pacific ◽  
Near Surface ◽  
The North ◽  
Surface Circulation ◽  
The North Pacific ◽  
Drifting Buoys

scholarly journals Attenuation of wind-induced pressure perturbations in alpine snow

2016 ◽  
Vol 62 (234) ◽  
pp. 674-683 ◽  
Author(s):  
STEPHEN A. DRAKE ◽  
HENDRIK HUWALD ◽  
MARC B. PARLANGE ◽  
JOHN S. SELKER ◽  
ANNE W. NOLIN ◽  
...  
Keyword(s):  
High Frequency ◽  
Pressure Measurements ◽  
Near Surface ◽  
Surface Circulation ◽  
Surface Snow ◽  
Theoretical Predictions ◽  
Air Mixing ◽  
Perturbation Pressure ◽  
The Impact ◽  
Lower Frequencies

ABSTRACTWindpumping has been identified as a process that could potentially enhance sublimation of surface snow at high forcing frequency and spawn air movement deeper in firn at lower frequencies. We performed an experiment to examine the relationship between high-frequency wind and pressure measurements within the top meter of an alpine snowpack and compared experimental results with two theoretical predictions. We find that both theoretical predictions underestimate high-frequency perturbation pressure attenuation with depth in the near-surface snowpack and the discrepancy between theory and measurement increases with perturbation pressure frequency. The impact of this result for near-surface snow is that potential enhanced sublimation will occur over a shallower snow depth than these two theories predict. Correspondingly, interstitial air mixing at depth in firn will be driven by lower frequencies than these two theories predict. While direct measurement of these energy-rich lower frequencies is beyond the scope of this paper, stationary pressure measurements validate the presence of a pressure field that could drive near-surface circulation.

LANCASTER SOUND SHIPBORNE MAGNETOMETER SURVEY

1966 ◽  
Vol 3 (2) ◽  
pp. 223-235 ◽  
Author(s):  
D. L. Barrett
Keyword(s):  
Canadian Arctic ◽  
Vertical Movement ◽  
Baffin Island ◽  
Total Field ◽  
Sharp Rise ◽  
Near Surface ◽  
Baffin Bay ◽  
Devon Island ◽  
The North ◽  
Half Graben

The total magnetic field and the depth of water were measured along a ship's track of about 1 000 nautical miles during a shipborne magnetometer survey in Lancaster Sound and Baffin Bay in the eastern part of the Canadian Arctic Archipelago.Several magnetic anomalies on the extreme northern and southern boundaries of Lancaster Sound as well as to the east of Devon Island in Baffin Bay are characteristic of near-surface features. There is little magnetic relief in the center of the sound. The intensity of the total field decreases from south to north and then rises sharply immediately south of Devon Island. This sharp rise trends northeasterly in Baffin Bay.Several features are indicated by these data; (1) a near-surface basement on Devon and Baffin Islands, (2) a basement flexure north of Baffin Island, the whole of Lancaster Sound being downwarped with vertical movement of as much as 8 km in the north, (3) a regional fault extending along the south coast of Devon Island and trending northeast in Baffin Bay.It is concluded that this half-graben structure in. Lancaster Sound may be associated with a postulated median ridge between Greenland and North America.

Near-surface circulation of the Nordic seas as measured by Lagrangian drifters

1996 ◽  
Vol 101 (C8) ◽  
pp. 18237-18258 ◽  
Author(s):  
P.-M. Poulain ◽  
A. Warn-Varnas ◽  
P. P. Niiler
Keyword(s):  
Near Surface ◽  
Nordic Seas ◽  
Lagrangian Drifters ◽  
Surface Circulation
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