Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Ingvald Svellingen"'
Publikováno v:
ICES Journal of Marine Science. 59:S281-S287
We describe an experiment intended to estimate the extent to which decommissioned platforms in the North Sea attract fish. The work was carried out at a ‘‘semi-cold’’ platform in the Norwegian Sector between May and September 1998. Hydroacous
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f97e6fbe3a5c79724800f30261c9e7b1
https://doi.org/10.1006/jmsc.2002.1279
https://doi.org/10.1006/jmsc.2002.1279
Autor:
Jan Helg Fosså, John Alvsvåg, Björn Lindberg, Tomas Lundälv, Ole Christensen, Pål Buhl Mortensen, Ingvald Svellingen
Publikováno v:
Cold-Water Corals and Ecosystems ISBN: 9783540241362
The Institute of Marine Research commenced a program for mapping and assessment of Lophelia reefs in 1997. It was initiated by reports from fishermen claiming that bottom trawling damaged deep-water coral reefs. The strategy was to survey coral sites
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23a4be463a81b29a83929d8e5d0f96d4
https://doi.org/10.1007/3-540-27673-4_18
https://doi.org/10.1007/3-540-27673-4_18
Publikováno v:
Bioacoustics. 12:335-336
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34358781be4c763e860d44e0c4d0d3de
https://doi.org/10.1080/09524622.2002.9753740
https://doi.org/10.1080/09524622.2002.9753740
Autor:
Egil Ona, Ingvald Svellingen
Publikováno v:
The Journal of the Acoustical Society of America. 109:2305-2305
Unbiased measurements of the mean target strength are needed if the absolute fish abundance is to be measured. For most pelagic fish, this also requires direct target strength techniques to work in high‐density situations. A probing, pressure stabi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::25540ff513047bfb230c56fbdcdfaabb
https://doi.org/10.1121/1.4744092
https://doi.org/10.1121/1.4744092
Publikováno v:
The Journal of the Acoustical Society of America. 109:2337-2337
Accurate estimation of fish stock abundance by acoustic surveying methods is now essential for long‐term assessment of many of the world’s largest fish stocks and the status of their ecosystems. Significant improvements of the acoustic oceanic su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::588aa4df21785059b12c0afe6da419b2
https://doi.org/10.1121/1.4744209
https://doi.org/10.1121/1.4744209
Autor:
Egil Ona, Ingvald Svellingen
Publikováno v:
The Journal of the Acoustical Society of America. 105:1049-1049
In many areas, and in tropical waters in particular, it may be difficult to fulfill the resolution criteria for high‐quality target strength measurements both with respect to density and species mixing. Since 1985 target strength data have been col
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f73c99f35ff8c93da55e355c0427cc1
https://doi.org/10.1121/1.424997
https://doi.org/10.1121/1.424997
Autor:
Ingvald Svellingen, Egil Ona
Publikováno v:
The Journal of the Acoustical Society of America. 105:1049-1049
High‐resolution target strength data can only be claimed valid in situations where it can be safely shown to be much less than one target per pulse volume. Many fish species occur in densities and at depths where this demand hardly can be met with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf8dd4e81a9dd415bb36ef888613c631
https://doi.org/10.1121/1.424996
https://doi.org/10.1121/1.424996