Newly Established Active Fault Research Center will Endeavor to Become the National Center for Active Faults in Japan
Active Fault Research Center (AFRC) was launched in April 2001 as one of major research units for the new Geological Survey of Japan (GSJ), according to the establishment of the National Institute of Advanced Industrial Science and Technology (AIST) AFRC is one of the responsible organizations for a...
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Published in | Journal of Geography (Chigaku Zasshi) Vol. 110; no. 6; pp. 808 - 815 |
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Main Author | |
Format | Journal Article |
Language | English Japanese |
Published |
Tokyo Geographical Society
25.12.2001
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Subjects | |
Online Access | Get full text |
ISSN | 0022-135X 1884-0884 |
DOI | 10.5026/jgeography.110.6_808 |
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Abstract | Active Fault Research Center (AFRC) was launched in April 2001 as one of major research units for the new Geological Survey of Japan (GSJ), according to the establishment of the National Institute of Advanced Industrial Science and Technology (AIST) AFRC is one of the responsible organizations for active fault studies in Japan under the Japanese government Headquarters for Earthquake Research Promotion (HQERP) AFRC conducts the following researches that is closely related to active faults. Study of active faults : HQERP has selected 98 active faults that are subject to prompt survey. These major active faults will be surveyed using various methods such as geological mapping, trenching and boring, in order to reveal the distribution and extent of each fault, timing of the last rupture event and recurrence intervals. On the basis of such paleoseismological data, the AFRC evaluates the possibility of future rupture and earthquake magnitude for each fault. Study of fault segmentation : A long active fault consists of several segments which can produce both single- and multiple-segment earthquakes. The important factors for segmentation study are the geometry, length, displacement and paleoseismicity of the surface faults of recent earthquakes to reveal the characteristics of fault segments. Modeling a faulting behavior using seismological and geodetic data for the evaluating future earthquakes on long active faults is also an essential part of this study. The North Anatolian fault in Turkey and the San Andreas fault in California, USA are two major on going international studies field being undertaken with the cooperation of the MTA-Turkey and the US Geological Survey, respectively. Studies in earthquake hazard assessment : On the basis of active fault study and fault modeling, AFRC estimates ground shaking from earthquakes. Earthquake ground shaking and damage is strongly dependent upon the epicentral distance, the way rupture propagates in a fault, and the characteristics of the subsurface structure. Considering these factors, simulation of the generation and propagation of seismic waves will be studied. Maintenance of an active fault database : AFRC publishes Annual Reports on Active Fault and Paleoearthquake Researches, and also publishes active fault strip maps and 1 : 500, 000- scale seismotectonic maps. There are plans to publish maps showing possible hazards from future earthquakes, in addition to maps showing rupture probabilities of major active faults in Japan. The AFRC will collect as much existing geological data as possible that is related to active faults and their activities. The AFRC will also create and maintain a database for longterm evaluation dataset and survey results of major active faults. All literature and databases will be open to the public and researchers. The author sincerely hopes that the new AFRC will become a key research institutes for earthquake hazard mitigation in Japan and play an important role as the national center for active faults in Japan. |
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AbstractList | Active Fault Research Center (AFRC) was launched in April 2001 as one of major research units for the new Geological Survey of Japan (GSJ), according to the establishment of the National Institute of Advanced Industrial Science and Technology (AIST) AFRC is one of the responsible organizations for active fault studies in Japan under the Japanese government Headquarters for Earthquake Research Promotion (HQERP) AFRC conducts the following researches that is closely related to active faults. Study of active faults : HQERP has selected 98 active faults that are subject to prompt survey. These major active faults will be surveyed using various methods such as geological mapping, trenching and boring, in order to reveal the distribution and extent of each fault, timing of the last rupture event and recurrence intervals. On the basis of such paleoseismological data, the AFRC evaluates the possibility of future rupture and earthquake magnitude for each fault. Study of fault segmentation : A long active fault consists of several segments which can produce both single- and multiple-segment earthquakes. The important factors for segmentation study are the geometry, length, displacement and paleoseismicity of the surface faults of recent earthquakes to reveal the characteristics of fault segments. Modeling a faulting behavior using seismological and geodetic data for the evaluating future earthquakes on long active faults is also an essential part of this study. The North Anatolian fault in Turkey and the San Andreas fault in California, USA are two major on going international studies field being undertaken with the cooperation of the MTA-Turkey and the US Geological Survey, respectively. Studies in earthquake hazard assessment : On the basis of active fault study and fault modeling, AFRC estimates ground shaking from earthquakes. Earthquake ground shaking and damage is strongly dependent upon the epicentral distance, the way rupture propagates in a fault, and the characteristics of the subsurface structure. Considering these factors, simulation of the generation and propagation of seismic waves will be studied. Maintenance of an active fault database : AFRC publishes Annual Reports on Active Fault and Paleoearthquake Researches, and also publishes active fault strip maps and 1 : 500, 000- scale seismotectonic maps. There are plans to publish maps showing possible hazards from future earthquakes, in addition to maps showing rupture probabilities of major active faults in Japan. The AFRC will collect as much existing geological data as possible that is related to active faults and their activities. The AFRC will also create and maintain a database for longterm evaluation dataset and survey results of major active faults. All literature and databases will be open to the public and researchers. The author sincerely hopes that the new AFRC will become a key research institutes for earthquake hazard mitigation in Japan and play an important role as the national center for active faults in Japan. |
Author | TSUKUDA, Eikichi |
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References | 活断層研究会 (1980) : 日本の活断層-分布図と資料-.東京大学出版会, 359p. 地震調査研究推進本部 (1997b) : 地震に関する基盤的調査観測計画 (平成9年8月29日). 38p. 佃 栄吉 (2001) : 「活断層研究センター」の紹介.なゐふる (地震学会), 26, 6-7. 粟田泰夫・吉岡敏和・佃 栄吉・Omer, Emre・Tamer, Y.Duman・Ahmet, Dogan (2001) : 北アナトリア断層系1999年Izmit地震に伴う地震断層のセグメント構造.活断層・古地震研究報告, 1,325-338. 地質調査所活断層研究グループ (2000) : 近畿三角帯における活断層調査-主要活断層の活動履歴と地震危険度-.第四紀研究, 39,289-301. 地震調査研究推進本部 (1999) : 地震調査研究の推進について-地震に関する観測, 測量, 調査及び研究の推進についての総合的かつ基本的な施策- (平成11年4月23日). 20p. 地震調査研究推進本部 (1997a) : 地震調査研究便覧・1997年版.地震予知総合研究振興会地震調査研究センター, 387p. 活断層研究会 (1991) : 新編日本の活断層-分布図と資料-.東京大学出版会, 437p. 隈元 崇・奥村晃史・活断層マップワーキンググループ (2000) : 日本の活断層の縮尺1/25,000での新規判読・図化と地理情報データベース化一特に技術的側面を中心とした報告.活断層研究, 19, 13-22. 中田 高・隈元 崇・活断層マップワーキンググループ (1999) : 日本の活断層詳細GISマップからわかること.月刊地球, 21,236-245. 杉山雄一 (1996) : 地質調査所の活断層調査・研究方針と大学の活断層研究に望むもの.活断層研究, 15,106-108. |
References_xml | – reference: 粟田泰夫・吉岡敏和・佃 栄吉・Omer, Emre・Tamer, Y.Duman・Ahmet, Dogan (2001) : 北アナトリア断層系1999年Izmit地震に伴う地震断層のセグメント構造.活断層・古地震研究報告, 1,325-338. – reference: 地質調査所活断層研究グループ (2000) : 近畿三角帯における活断層調査-主要活断層の活動履歴と地震危険度-.第四紀研究, 39,289-301. – reference: 活断層研究会 (1991) : 新編日本の活断層-分布図と資料-.東京大学出版会, 437p. – reference: 地震調査研究推進本部 (1997b) : 地震に関する基盤的調査観測計画 (平成9年8月29日). 38p. – reference: 地震調査研究推進本部 (1997a) : 地震調査研究便覧・1997年版.地震予知総合研究振興会地震調査研究センター, 387p. – reference: 地震調査研究推進本部 (1999) : 地震調査研究の推進について-地震に関する観測, 測量, 調査及び研究の推進についての総合的かつ基本的な施策- (平成11年4月23日). 20p. – reference: 活断層研究会 (1980) : 日本の活断層-分布図と資料-.東京大学出版会, 359p. – reference: 隈元 崇・奥村晃史・活断層マップワーキンググループ (2000) : 日本の活断層の縮尺1/25,000での新規判読・図化と地理情報データベース化一特に技術的側面を中心とした報告.活断層研究, 19, 13-22. – reference: 中田 高・隈元 崇・活断層マップワーキンググループ (1999) : 日本の活断層詳細GISマップからわかること.月刊地球, 21,236-245. – reference: 佃 栄吉 (2001) : 「活断層研究センター」の紹介.なゐふる (地震学会), 26, 6-7. – reference: 杉山雄一 (1996) : 地質調査所の活断層調査・研究方針と大学の活断層研究に望むもの.活断層研究, 15,106-108. |
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Title | Newly Established Active Fault Research Center will Endeavor to Become the National Center for Active Faults in Japan |
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