Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Per Digranes"'
Publikováno v:
Tectonophysics. 369:175-197
A total of 13 regional Ocean Bottom Seismograph (OBS) profiles with an accumulated length of 2207 km acquired on the Voring Margin, NE Atlantic have been travel time modelled with regards to S-waves. The Vp/Vs ratios are found to decrease with depth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fced1bf784aa48fa6d879dbf46853a02
https://doi.org/10.1016/s0040-1951(03)00198-7
https://doi.org/10.1016/s0040-1951(03)00198-7
Publikováno v:
GEOPHYSICS. 68:566-573
A knowledge of permafrost conditions is important for planning the foundation of buildings and engineering activities at high latitudes and for geological mapping of sediment thicknesses and architecture. The freezing of sediments is known to greatly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4321528d8b5586a60eeae0c008bb93c9
https://doi.org/10.1190/1.1567226
https://doi.org/10.1190/1.1567226
Autor:
Toshihiko Kanazawa, Shuichi Kodaira, Per Digranes, Hajime Shiobara, Rolf Mjelde, Hideki Shimamura
Publikováno v:
Earth, Planets and Space. 55:65-81
Shear wave refractions and wide-angle reflections recorded on densely spaced Ocean Bottom Seismometers (OBSs) in the Voring Basin have been modelled by use of 2-D kinematic ray-tracing. Twenty-five three component OBSs were deployed along a 120 km lo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a8a6207460a2ad1aac6e42b461aadbc
https://doi.org/10.1186/bf03351734
https://doi.org/10.1186/bf03351734
Autor:
Shuichi Kodaira, Rolf Mjelde, Hajime Shiobara, T Egebjerg, Per Digranes, S Thorbjørnsen, N Sørenes, H Brekke, Hideki Shimamura
Publikováno v:
Tectonophysics. 355:99-126
Three regional Ocean Bottom Seismograph (OBS) profiles with a total of fifteen recovered OBSs were acquired in the northern part of the Voring Basin, mid-Norway margin, in 1996. The data have been modelled by inversion and forward modelling of the OB
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ca61a1ceb89193769e0c1f5401b76c3b
https://doi.org/10.1016/s0040-1951(02)00136-1
https://doi.org/10.1016/s0040-1951(02)00136-1
Autor:
Eivind Berg, Toshihiko Kanazawa, Hideki Shimamura, Per Digranes, Hajime Shiobara, Rolf Mjelde, Shuichi Kodaira
Publikováno v:
Tectonophysics. 293:157-174
A regional Ocean Bottom Seismometer (OBS) dataset was acquired in the central and northern part of the Voring Basin, N. Norway, in 1992. Thirty three-component OBSs were deployed along seven regional profiles, and the shear waves recorded on the hori
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18c39dd9c1bb38e51a0827e6f337f8b1
https://doi.org/10.1016/s0040-1951(98)00093-6
https://doi.org/10.1016/s0040-1951(98)00093-6
Autor:
Per Digranes, Oddmund Riise, Eivind Berg, Hideki Shimamura, Shuichi Kodaira, Hajime Shiobara, Toshihiko Kanazawa, Rolf Mjelde
Publikováno v:
pure and applied geophysics. 149:641-665
—Semi-regional Ocean Bottom Seismograph (OBS) data acquired in the central and northern part of the Voring Basin, mid-Norway margin, have been modeled by use of 2-D ray-tracing. The semi-regional model, derived from the study of twenty-five OBSs de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aeb26cbb958ae23284e3fb9b7d928727
https://doi.org/10.1007/s000240050045
https://doi.org/10.1007/s000240050045
Autor:
Rolf Mjelde, Jan Petter Fjellanger, Per Digranes, Hajime Shiobara, Hideki Shimamura, Shuichi Kodaira
Publikováno v:
Marine Geophysical Researches. 19:81-96
A 140 km long wide-angle seismic profile has been acquired by use of 6 Ocean Bottom Seismographs across the Jan Mayen Ridge, North Atlantic. The profile was acquired twice; once with a traditionally tuned standard source and secondly with a somewhat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68c8b845c57bed8a78f3d1ed22fd8189
https://doi.org/10.1023/a:1004275600265
https://doi.org/10.1023/a:1004275600265
Autor:
Eivind Berg, Toshihiko Kanazawa, Shuichi Kodaira, Rolf Mjelde, Hideki Shimamura, Hajime Shiobara, Per Digranes
Publikováno v:
Pure and Applied Geophysics PAGEOPH. 147:611-629
Three component recordings from an array of five ocean bottom seismographs in the northwestern part of the Voring basin have been used to obtain a 2-D shear-wave (S-wave) velocity-depth model. The shear waves are identified by means of travel-time di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82e585491b1f4b33b997b34085387476
https://doi.org/10.1007/bf01089694
https://doi.org/10.1007/bf01089694
Publikováno v:
Geophysical Journal International. 126:545-554
SUMMARY Two VSPs have been analysed from the Kola superdeep borehole, located on the Kola Peninsula. The Kola borehole was drilled down to a depth of 12 260 m and VSPs were recorded in the interval 2150 to 6000 m. The VSPs sample the Proterozoic Pech
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb33cca7323875115185094132a0de42
https://doi.org/10.1111/j.1365-246x.1996.tb05309.x
https://doi.org/10.1111/j.1365-246x.1996.tb05309.x
Autor:
Yngve Kristoffersen, Per Digranes
Publikováno v:
Pure and Applied Geophysics PAGEOPH. 145:313-325
The compression wavefield is efficiently converted to shear-wave energy at post-critical angles in areas of high impedance contrast at the sea floor. We have analysed mode-converted shear waves in a data set acquired with a hybrid marine/land geometr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::507d3d74b46aa41348ad15d59bb31139
https://doi.org/10.1007/bf00880273
https://doi.org/10.1007/bf00880273