Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Leonard E. Mellberg"'
Autor:
Ola M. Johannessen, David G. Browning, Leonard E. Mellberg, Donald N. Connors, George Botseas
Publikováno v:
The Journal of the Acoustical Society of America. 89:2144-2156
A study, utilizing numerical experiments, of the environmental acoustic effects of the western Greenland Sea Frontal Zone in the summer of 1983 along a 185-km west to east transect is presented. The transect begins at the edge of the marginal ice zon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41746739d5ee046089e686ee17bb248b
https://doi.org/10.1121/1.400908
https://doi.org/10.1121/1.400908
Publikováno v:
The Journal of the Acoustical Society of America. 87:1044-1054
A numerical modeling study of the time variability of acoustic propagation through a Gulf Stream meander and eddies is presented. Both a cold‐core (cyclonic) eddy and a warm‐core (anticyclonic) eddy are included. Time periods of 2, 4, and 7 days;
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::852769e9219989be3a025fe71d9a334e
https://doi.org/10.1121/1.398831
https://doi.org/10.1121/1.398831
Publikováno v:
The Journal of the Acoustical Society of America. 82:275-286
A model has been developed to evaluate reverberation produced by the backscatter of a high‐frequency acoustic pulse from pack ice regions characteristic of the interior Arctic. The model uses measured two‐dimensional under‐ice acoustic profile
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ae987037c5f1f030bb12b45db25c49c
https://doi.org/10.1121/1.395838
https://doi.org/10.1121/1.395838
Publikováno v:
The Journal of the Acoustical Society of America. 55:1081-1083
Recent oceanographic observations in the Tyrrhenian Sea and Sardinian Channel show a well‐defined stepped thermohaline structure below the core of the Levantine water (∼500 m). Such a stepped structure has also been found under the Mediterranean
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f28a4e917eb0d7d308ac9d718fc0ca5
https://doi.org/10.1121/1.1914652
https://doi.org/10.1121/1.1914652
Autor:
Ola M. Johannessen, George Botseas, Leonard E. Mellberg, Donald N. Connors, David G. Browning
Publikováno v:
The Journal of the Acoustical Society of America. 79:S69-S69
A series of small cyclonic eddies have been observed along the ice edge adjacent to the East Greenland current in the vicinity of the Fram Strait. These eddies arc characterized by a unique spiral surface pattern as pack ice is drawn into the circula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2cfa9e4ad61f7440b4402558668deac
https://doi.org/10.1121/1.2023354
https://doi.org/10.1121/1.2023354
Publikováno v:
The Journal of the Acoustical Society of America. 84:S92-S92
In a previous paper, A. R. Robinson [J. Acoust. Soc. Am. Suppl. 1 82, S2 (1987)] presented an overview and results from an ongoing forecast scheme for Gulf Stream oceanic mesoscale fields (temperature, sound speed, etc.) (gulfcasting). The coupling o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f7d0c91c8bb3c26c0d075a496f1f53a7
https://doi.org/10.1121/1.2026561
https://doi.org/10.1121/1.2026561
Autor:
Leonard E. Mellberg, William T. Ellison, Suzanne E. Overdeep, Carl J. Albanese, Garner C. Bishop
Publikováno v:
The Journal of the Acoustical Society of America. 77:S56-S56
A model has been developed to evaluate the backscattering of a high‐frequency acoustic pulse from the pack ice regions characteristic of the interior Arctic. The model utilizes measured two‐dimensional under‐ice profile data and several empiric
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::37be45d7e19df430ebaea1178b687263
https://doi.org/10.1121/1.2022406
https://doi.org/10.1121/1.2022406
Autor:
Garner C. Bishop, Leonard E. Mellberg
Publikováno v:
The Journal of the Acoustical Society of America. 78:S57-S57
A simulation model that evaluates the backscatter of a high‐frequency acoustic pulse from the underice surface of pack ice regions, characteristic of the interior Arctic, has been used to investigate the extent to which various morphologic, geometr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8571c83b5a3d213dcbad3305f8c837fa
https://doi.org/10.1121/1.2022885
https://doi.org/10.1121/1.2022885
Autor:
Leonard E. Mellberg, Donald N. Connors, George Botseas, Ola M. Johannessen, David G. Browning
Publikováno v:
The Journal of the Acoustical Society of America. 78:S71-S71
In a previous paper [L. E. Mellberg et al., J. Acoust. Soc. Am. Suppl. 1 77, S56 (1985)], an analysis was conducted to determine the relative importance of acoustic propagation modes (bottom bounce, surface duct, and convergence zone) for a shallow s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dcf45933d96fc2b0ab1a99284bb479ed
https://doi.org/10.1121/1.2022961
https://doi.org/10.1121/1.2022961
Autor:
David G. Browning, Leonard E. Mellberg, Ola M. Johannessen, Donald N. Connors, George Botseas
Publikováno v:
The Journal of the Acoustical Society of America. 82:S31-S31
In a previous paper [L. E. Mellberg et al., J. Acoust. Soc. Am. Suppl. 1 78, S71 (1985)] the directional dependence of acoustic modes across the East Greenland Frontal Zone was examined. However, for a given source and receiver depth, transmission lo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8cae5327f98ddc3421b071c654bd932b
https://doi.org/10.1121/1.2024757
https://doi.org/10.1121/1.2024757