JP2008020191A - 海底資源探査システム及び海底資源探査方法 - Google Patents
海底資源探査システム及び海底資源探査方法 Download PDFInfo
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- JP2008020191A JP2008020191A JP2004308815A JP2004308815A JP2008020191A JP 2008020191 A JP2008020191 A JP 2008020191A JP 2004308815 A JP2004308815 A JP 2004308815A JP 2004308815 A JP2004308815 A JP 2004308815A JP 2008020191 A JP2008020191 A JP 2008020191A
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- scattering intensity
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- resource exploration
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- 238000000034 method Methods 0.000 title claims description 20
- 238000004458 analytical method Methods 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims description 18
- 239000013535 sea water Substances 0.000 claims description 13
- 150000004678 hydrides Chemical class 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 46
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 description 22
- 239000007789 gas Substances 0.000 description 15
- -1 Methane Hydride Chemical compound 0.000 description 8
- 241000251468 Actinopterygii Species 0.000 description 7
- 230000003321 amplification Effects 0.000 description 7
- 238000003199 nucleic acid amplification method Methods 0.000 description 7
- 239000007787 solid Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 238000005401 electroluminescence Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/38—Seismology; Seismic or acoustic prospecting or detecting specially adapted for water-covered areas
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
- G01V9/007—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00 by detecting gases or particles representative of underground layers at or near the surface
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/60—Analysis
- G01V2210/64—Geostructures, e.g. in 3D data cubes
- G01V2210/647—Gas hydrates
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Radar, Positioning & Navigation (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Geophysics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Oceanography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Geophysics And Detection Of Objects (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
【解決手段】海底資源探査システムは、海中へ音波を送信し、音波が海水中に存在する、海水と密度の異なる物体の境界面で反射した散乱波を受信する振動子1と、送信した音波及び受信した散乱波から散乱強度を計算し、所定の散乱強度である場合、物体の直下の海底に資源があると判断する解析部17とを備える。
【選択図】図1
Description
http://www.mh21japan.gr.jp/(メタンハイドレード資源開発研究コンソーシアムのホームページ)
本実施形態では、海底資源であるメタンハイドレードを探査する。本発明者らは、メタンハイドレードが存在する海底から、メタンガスとメタンハイドレードとが混合した物体が涌き上がることを発見し、この物体を探査することにより、メタンハイドレードの存在場所を推測する。
送受切り替え部14は、送信及び受信の切り替えを行う。
Sv=10logsv ・・・式(2)
ここで、Iiは入射する平面波音波の強さ、Isは単位体積の物体の音響中心から単位距離における散乱波の強さを示す。
次に、本実施形態に係る海底資源探査方法について、説明する。
本実施形態に係る海底資源探査システム及び海底資源探査方法によると、解析部17が海中のデータを解析することにより、信頼性が高く、安価に海底資源を探査することができる。
本発明は上記の実施形態によって記載したが、この開示の一部をなす論述及び図面はこの発明を限定するものであると理解すべきではない。この開示から当業者には様々な代替実施形態、実施例及び運用技術が明らかとなろう。
本発明者らは、メタンプルームをマッピングし、エコーグラムにおいて、直径約100m、高さが200m〜700m、海面下600〜300mに届く、36プルームを測定した。
3…物体
4…メタンハイドレード(海底資源)
5…船
11…正弦波発生部
12…パルス幅切り替え部
13…送信信号増幅部
14…送受切り替え部
16…受信信号増幅部
17…解析部
18…表示部
Claims (6)
- 海中へ音波を送信する送信手段と、
前記音波が海水中に存在する、海水と密度の異なる物体の境界面で反射した散乱波を受信する受信手段と、
前記送信した音波及び前記受信した散乱波から散乱強度を計算し、所定の散乱強度である場合、前記物体の直下の海底に資源があると判断する解析手段と
を備えることを特徴とする海底資源探査システム。 - 前記所定の散乱強度を有する物体の輪郭を可視化して表示する表示手段を更に備えることを特徴とする請求項1に記載の海底資源探査システム。
- 前記解析手段は、前記物体における散乱強度の最大値が、−60〜−30dBであり、前記物体における散乱強度の平均値が、−70〜−50dBである場合、前記物体の直下の海底に資源があると判断することを特徴とする請求項1又は2に記載の海底資源探査システム。
- 前記解析手段は、海底直上から100m以内に、前記物体が−45〜−30dBの散乱強度を有する場合、前記物体の直下の海底に資源があると判断することを特徴とする請求項3に記載の海底資源探査システム。
- 前記物体は、ガスを含み、前記資源は、ガスハイドレードであることを特徴とする請求項1〜4のいずれか1項に記載の海底資源探査システム。
- 海中へ音波を送信するステップと、
前記音波が海水中に存在する、海水と密度の異なる物体の境界面で反射した散乱波を受信するステップと、
前記送信した音波及び前記受信した散乱波から散乱強度を計算するステップと、
所定の散乱強度である場合、前記物体の直下の海底に資源があると判断するステップと
を含むことを特徴とする海底資源探査方法。
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004308815A JP3662921B1 (ja) | 2004-10-22 | 2004-10-22 | 海底資源探査システム及び海底資源探査方法 |
CN2005800399542A CN101069104B (zh) | 2004-10-22 | 2005-10-21 | 海底资源调查系统以及海底资源调查方法 |
US11/665,826 US7539081B2 (en) | 2004-10-22 | 2005-10-21 | Seabed resource exploration system and seabed resource exploration method |
AU2005296562A AU2005296562B2 (en) | 2004-10-22 | 2005-10-21 | Submarine resource probing system and method |
RU2007118945/28A RU2340917C1 (ru) | 2004-10-22 | 2005-10-21 | Система и способ разведки ресурсов морского дна |
EP05805125.1A EP1813966B1 (en) | 2004-10-22 | 2005-10-21 | Seabed resource exploration system and seabed resource exploration method |
PCT/JP2005/019410 WO2006043668A1 (ja) | 2004-10-22 | 2005-10-21 | 海底資源探査システム及び海底資源探査方法 |
KR1020077011619A KR100852967B1 (ko) | 2004-10-22 | 2005-10-21 | 해저 자원 탐사 시스템 |
NO20072554A NO337293B1 (no) | 2004-10-22 | 2007-05-21 | System og fremgangsmåte for undervannsressursutforskning |
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JP2004308815A JP3662921B1 (ja) | 2004-10-22 | 2004-10-22 | 海底資源探査システム及び海底資源探査方法 |
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JP3662921B1 JP3662921B1 (ja) | 2005-06-22 |
JP2008020191A true JP2008020191A (ja) | 2008-01-31 |
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US (1) | US7539081B2 (ja) |
EP (1) | EP1813966B1 (ja) |
JP (1) | JP3662921B1 (ja) |
KR (1) | KR100852967B1 (ja) |
CN (1) | CN101069104B (ja) |
AU (1) | AU2005296562B2 (ja) |
NO (1) | NO337293B1 (ja) |
RU (1) | RU2340917C1 (ja) |
WO (1) | WO2006043668A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011242231A (ja) * | 2010-05-18 | 2011-12-01 | Tokyo Univ Of Marine Science & Technology | 地下密度構造の推定方法 |
Families Citing this family (12)
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RU2474386C2 (ru) * | 2007-06-01 | 2013-02-10 | Конинклейке Филипс Электроникс, Н.В. | Кабель беспроводного ультразвукового зонда |
US20100160784A1 (en) * | 2007-06-01 | 2010-06-24 | Koninklijke Philips Electronics N.V. | Wireless Ultrasound Probe With Audible Indicator |
RU2502470C2 (ru) * | 2007-06-01 | 2013-12-27 | Конинклейке Филипс Электроникс, Н.В. | Облегченный беспроводной ультразвуковой датчик |
WO2008146203A1 (en) * | 2007-06-01 | 2008-12-04 | Koninklijke Philips Electronics, N.V. | Wireless ultrasound probe user interface |
WO2008146206A2 (en) * | 2007-06-01 | 2008-12-04 | Koninklijke Philips Electronics, N.V. | Wireless ultrasound probe asset tracking |
EP2546680B1 (en) * | 2011-07-13 | 2014-06-04 | Sercel | Method and device for automatically detecting marine animals |
RU2490676C1 (ru) * | 2012-04-11 | 2013-08-20 | Александр Валентинович Воробьев | Способ обнаружения подводных залежей газовых гидратов |
EP3114505B1 (en) * | 2014-03-07 | 2022-07-20 | ExxonMobil Upstream Research Company | Exploration method and system for detection of hydrocarbons from the water column |
US10145974B2 (en) | 2014-03-07 | 2018-12-04 | Exxonmobil Upstream Research Company | Exploration method and system for detection of hydrocarbons from the water column |
KR101435617B1 (ko) * | 2014-07-03 | 2014-08-28 | 한국지질자원연구원 | 해저 지질 조사용 현장 음파 전달속도 측정 시스템 |
CN111650159B (zh) * | 2020-06-17 | 2023-07-18 | 自然资源部第一海洋研究所 | 一种海面反向散射强度测量方法 |
CN113504567B (zh) * | 2021-07-27 | 2023-06-13 | 中国石油大学(华东) | 根据与天然气水合物关系进行的海底甲烷渗漏分类方法 |
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GB1411645A (en) | 1973-11-29 | 1975-10-29 | Texaco Development Corp | Method and apparatus for offshore geophysical exploration |
SU668451A1 (ru) | 1977-01-25 | 1985-02-23 | Южное Морское Научно-Производственное Геолого-Геофизическое Объединение "Южморгео" | Способ морской сейсмической разведки |
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- 2005-10-21 RU RU2007118945/28A patent/RU2340917C1/ru active
- 2005-10-21 CN CN2005800399542A patent/CN101069104B/zh active Active
- 2005-10-21 KR KR1020077011619A patent/KR100852967B1/ko active IP Right Grant
- 2005-10-21 EP EP05805125.1A patent/EP1813966B1/en active Active
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Cited By (1)
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JP2011242231A (ja) * | 2010-05-18 | 2011-12-01 | Tokyo Univ Of Marine Science & Technology | 地下密度構造の推定方法 |
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Publication number | Publication date |
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RU2340917C1 (ru) | 2008-12-10 |
US7539081B2 (en) | 2009-05-26 |
WO2006043668A1 (ja) | 2006-04-27 |
AU2005296562B2 (en) | 2009-04-02 |
JP3662921B1 (ja) | 2005-06-22 |
NO20072554L (no) | 2007-07-04 |
NO337293B1 (no) | 2016-02-29 |
KR100852967B1 (ko) | 2008-08-19 |
EP1813966A1 (en) | 2007-08-01 |
KR20070084465A (ko) | 2007-08-24 |
CN101069104B (zh) | 2010-05-05 |
AU2005296562A1 (en) | 2006-04-27 |
EP1813966A4 (en) | 2012-04-11 |
US20080112266A1 (en) | 2008-05-15 |
CN101069104A (zh) | 2007-11-07 |
EP1813966B1 (en) | 2013-07-31 |
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