High-resolution seismic studies of gas hydrates west of Svalbard

被引：0
|
作者：
Jörg Posewang
Jürgen Mienert
机构：
[1] SFB 313,
[2] Christian-Albrechts-University,undefined
[3] Olshausenstr. 40,undefined
[4] D-24118 Kiel,undefined
[5] Germany,undefined
[6] Department of Geology,undefined
[7] University of Tromsø,undefined
[8] Dramsveien 201,undefined
[9] N-9037 Tromsø,undefined
[10] Norway,undefined
来源：
Geo-Marine Letters | 1999年 / 19卷
关键词：
Reflection; High Velocity; Thickness Variation; Hydrophone; Seismic Profile;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
 A strong bottom-simulating reflection (BSR) with high-amplitude variations is detectable in high- resolution reflection seismic profiles west of Svalbard. Above the BSR, anomalously high velocities up to 1840 m/s, calculated from high-frequency ocean-bottom hydrophone (HF-OBH) data, indicate the existence of gas-hydrated sediments. Below the BSR, a low-velocity layer, interpreted as gas-bearing sediments, shows thickness variations from 12 to 25 m. In addition, two other low-velocity layers clearly containing free gas are detected within the classic hydrate stability zone (HSZ) where, a theoretical viewpoint, free gas cannot exist.
引用
收藏
页码：150 / 156
页数：6
相关论文
共 50 条
  • [1] High-resolution seismic studies of gas hydrates west of Svalbard
    Posewang, J
    Mienert, J
    [J]. GEO-MARINE LETTERS, 1999, 19 (1-2) : 150 - 156
  • [2] SEISMIC STUDIES OF MARINE GAS HYDRATES
    SONG Haibin (Institute of Geology and Geophysics
    [J]. 化工学报, 2003, (S1) : 47 - 56
  • [3] Gas hydrates, free gas distribution and fault pattern on the west Svalbard continental margin
    Madrussani, Gianni
    Rossi, Giuliana
    Camerlenghi, Angelo
    [J]. GEOPHYSICAL JOURNAL INTERNATIONAL, 2010, 180 (02) : 666 - 684
  • [4] Spatial distribution of gas hydrates from high-resolution seismic and core data, Woolsey Mound, Northern Gulf of Mexico
    Simonetti, Antonello
    Knapp, James H.
    Sleeper, Kenneth
    Lutken, Carol B.
    Macelloni, Leonardo
    Knapp, Camelia C.
    [J]. MARINE AND PETROLEUM GEOLOGY, 2013, 44 : 21 - 33
  • [5] Shallow gas high-resolution seismic signatures in a subtropical estuary
    Pezza Andrade, Joao Fernando
    Noernberg, M. A.
    Nagai, R. H.
    [J]. GEO-MARINE LETTERS, 2021, 41 (03)
  • [6] Shallow gas high-resolution seismic signatures in a subtropical estuary
    João Fernando Pezza Andrade
    M. A. Noernberg
    R. H. Nagai
    [J]. Geo-Marine Letters, 2021, 41
  • [7] High-resolution, deep-towed, multichannel seismic survey of deep-sea gas hydrates off western Canada
    Chapman, NR
    Gettrust, JF
    Walia, R
    Hannay, D
    Spence, GD
    Wood, WT
    Hyndman, RD
    [J]. GEOPHYSICS, 2002, 67 (04) : 1038 - 1047
  • [8] High-resolution probabilistic seismic hazard analysis of West Nusa Tenggara, Indonesia
    Yuliastuti, Y.
    Setiadipura, T.
    Wicaksono, A. B.
    Alhakim, E. E.
    Suntoko, H.
    Sunarko, S.
    [J]. JOURNAL OF SEISMOLOGY, 2021, 25 (03) : 937 - 948
  • [9] HIGH-RESOLUTION SEISMIC STUDY IN THE GAS HILLS URANIUM DISTRICT, WYOMING
    APPLEGATE, JK
    EMILIA, DA
    NEITZEL, EB
    DONALDSON, PR
    [J]. GEOPHYSICS, 1982, 47 (10) : 1355 - 1374
  • [10] HIGH-RESOLUTION SEISMIC STUDY IN THE GAS HILLS URANIUM DISTRICT, WYOMING
    APPLEGATE, JK
    DONALDSON, PR
    NEITZEL, EB
    EMILIA, DA
    [J]. GEOPHYSICS, 1979, 44 (03) : 416 - 416
12345