SUBMARINE RESOURCE PROBING SYSTEM AND METHOD
    3.
    发明公开
    SUBMARINE RESOURCE PROBING SYSTEM AND METHOD 有权
    系统VERFAHREN ZUR ERFORSCHUNG VON MEERESBODENRESSOURCEN

    公开(公告)号:EP1813966A1

    公开(公告)日:2007-08-01

    申请号:EP05805125.1

    申请日:2005-10-21

    申请人: Aoyama, Chiharu

    发明人: Aoyama, Chiharu

    IPC分类号: G01V1/00 G01S15/88

    摘要: A seabed resource exploration system includes: a vibrator 1 for transmitting a sound wave into the sea and receiving a scattered wave in which the sound wave is reflected on a boundary surface between seawater and a mixture of methane gas and methane hydrate, which exists in the seawater; and an analyzer 17 for determining that the methane hydrate exists in a seabed immediately under the mixture when backscattering strength, calculated by the transmitted sound wave and the received scattered wave, is in a predetermined relationship. The predetermined relationship satisfies a relationship that a maximum value of the backscattering strength is -60 to -30 dB and an average value of the backscattering strength is -70 to -50 dB. The backscattering strength is on a grid obtained by cutting the mixture into round slices in the depth direction by a predetermined width, in a range from the seabed to a predetermined height.

    摘要翻译: 海底资源勘查系统包括:振动器1,用于将声波传输到海中并且接收散射波,其中声波在海水与甲烷气体和甲烷水合物的混合物之间的边界面上反射,存在于 海水; 以及分析器17,用于当通过发送的声波和接收到的散射波计算的后向散射强度处于预定关系时,确定在混合物正下方的海底存在甲烷水合物。 该预定关系满足后向散射强度的最大值为-60〜-30dB,后向散射强度的平均值为-70〜-50dB的关系。 背景散射强度在从海床到预定高度的范围内通过将混合物在深度方向上切割成预定宽度的圆形切片而获得的网格。