{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1360861291386923904.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1785/0220220049"}},{"identifier":{"@type":"URI","@value":"https://pubs.geoscienceworld.org/ssa/srl/article-pdf/94/1/149/5756618/srl-2022049.1.pdf"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"4 cm Portable Active Seismic Source (PASS) for Meter- to Kilometer-Scale Imaging and Monitoring of Subsurface Structures"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>Abstract</jats:title>\n               <jats:p>We have developed a minimal Portable Active Seismic Source (PASS) system for imaging and monitoring geological formations. Stacking of the signals continuously generated by the PASS enhances the signal-to-noise ratio, allowing the use of a small seismic source to explore and monitor areas with poor accessibility. The small size and low cost of the PASS allow its deployment in many places to continuously monitor geological formations, including reservoirs, with high spatial resolution. The PASS generates chirp signals with a wide frequency range, which is configurable to suit the imaging or monitoring target. Here we report applications of our PASS on a riverbank and, in combination with a distributed acoustic sensing (DAS) array, on a tailings embankment in a mining area. With its dense array of DAS receivers, the PASS-DAS system shows promise for high-resolution and low-cost monitoring applications. The chirp signals from our PASS unit (4 cm diameter motor), generated by eccentric rotation of a mass &lt;10 g with a frequency range of 20–60 Hz, propagated a horizontal distance of &gt;900 m. We also recorded temporal variations of seismic velocity and attenuation associated with rainfall events and ice formation. These field experiments demonstrate that the PASS can be used to rapidly and inexpensively image sites with limited access, such as mountainous and extraterrestrial environments, and for monitoring embankments, landslides, and geothermal or CO2 storage reservoirs.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1420845751141930368","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"60455491"},{"@type":"NRID","@value":"1000060455491"},{"@type":"KAKEN_RESEARCHERS","@value":"50284568"},{"@type":"NRID","@value":"1000050284568"},{"@type":"ORCID","@value":"0000-0003-0951-4596"},{"@type":"NRID","@value":"9000004626459"},{"@type":"NRID","@value":"9000018751344"},{"@type":"NRID","@value":"9000412401851"},{"@type":"NRID","@value":"9000405858316"},{"@type":"NRID","@value":"9000257719655"},{"@type":"NRID","@value":"9000367830226"},{"@type":"NRID","@value":"9000002009398"},{"@type":"NRID","@value":"9000005924968"},{"@type":"NRID","@value":"9000411038504"},{"@type":"NRID","@value":"9000368920258"},{"@type":"NRID","@value":"9000242741325"},{"@type":"NRID","@value":"9000310320835"},{"@type":"NRID","@value":"9000381063555"},{"@type":"NRID","@value":"9000001471781"},{"@type":"NRID","@value":"9000412401929"},{"@type":"NRID","@value":"9000412401903"},{"@type":"NRID","@value":"9000363174311"},{"@type":"NRID","@value":"9000406302384"},{"@type":"NRID","@value":"9000303996696"},{"@type":"NRID","@value":"9000412590819"},{"@type":"NRID","@value":"9000107313522"},{"@type":"NRID","@value":"9000412401891"},{"@type":"NRID","@value":"9000414553161"},{"@type":"NRID","@value":"9000279889810"},{"@type":"NRID","@value":"9000408668753"},{"@type":"NRID","@value":"9000386338033"},{"@type":"NRID","@value":"9000023579065"},{"@type":"NRID","@value":"9000243887455"},{"@type":"NRID","@value":"9000401695505"},{"@type":"NRID","@value":"9000405616178"},{"@type":"NRID","@value":"9000409514328"},{"@type":"NRID","@value":"9000318155157"},{"@type":"NRID","@value":"9000415433012"},{"@type":"NRID","@value":"9000023595015"},{"@type":"NRID","@value":"9000023579017"},{"@type":"NRID","@value":"9000257903040"},{"@type":"NRID","@value":"9000258149268"},{"@type":"NRID","@value":"9000257986267"},{"@type":"NRID","@value":"9000242138576"},{"@type":"NRID","@value":"9000341533906"},{"@type":"NRID","@value":"9000412401880"},{"@type":"NRID","@value":"9000237782800"},{"@type":"NRID","@value":"9000325832229"},{"@type":"NRID","@value":"9000356479491"},{"@type":"NRID","@value":"9000405707211"},{"@type":"NRID","@value":"9000256021504"},{"@type":"NRID","@value":"9000025107360"},{"@type":"NRID","@value":"9000279889691"},{"@type":"NRID","@value":"9000288836258"},{"@type":"NRID","@value":"9000412546652"},{"@type":"NRID","@value":"9000356479526"},{"@type":"NRID","@value":"9000257902067"},{"@type":"NRID","@value":"9000388993426"},{"@type":"NRID","@value":"9000023582145"},{"@type":"NRID","@value":"9000017396041"},{"@type":"NRID","@value":"9000242120206"},{"@type":"NRID","@value":"9000398155721"},{"@type":"NRID","@value":"9000415201544"},{"@type":"NRID","@value":"9000023595082"},{"@type":"NRID","@value":"9000412401859"},{"@type":"NRID","@value":"9000326666244"},{"@type":"NRID","@value":"9000375922039"},{"@type":"NRID","@value":"9000022846938"},{"@type":"NRID","@value":"9000412401875"},{"@type":"NRID","@value":"9000412401885"},{"@type":"NRID","@value":"9000286288171"},{"@type":"NRID","@value":"9000351082952"},{"@type":"NRID","@value":"9000414389630"},{"@type":"NRID","@value":"9000415433007"},{"@type":"NRID","@value":"9000256898219"},{"@type":"NRID","@value":"9000412525355"},{"@type":"NRID","@value":"9000279889168"},{"@type":"NRID","@value":"9000405858311"},{"@type":"NRID","@value":"9000243905926"},{"@type":"NRID","@value":"9000415155242"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/read0189131"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/takeshitsuji"}],"foaf:name":[{"@value":"Takeshi Tsuji"}],"jpcoar:affiliationName":[{"@value":"1School of Engineering, The University of Tokyo, Tokyo, Japan"},{"@value":"2Faculty of Engineering, Kyushu University, Fukuoka, Japan"},{"@value":"3International Institute for Carbon-Neutral Energy Research (I2CNER), Kyushu University, Fukuoka, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380861291386923905","@type":"Researcher","foaf:name":[{"@value":"Shuhei Tsuji"}],"jpcoar:affiliationName":[{"@value":"2Faculty of Engineering, Kyushu University, Fukuoka, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380861291386923908","@type":"Researcher","foaf:name":[{"@value":"Junji Kinoshita"}],"jpcoar:affiliationName":[{"@value":"2Faculty of Engineering, Kyushu University, Fukuoka, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380861291386923906","@type":"Researcher","foaf:name":[{"@value":"Tatsunori Ikeda"}],"jpcoar:affiliationName":[{"@value":"2Faculty of Engineering, Kyushu University, Fukuoka, Japan"},{"@value":"3International Institute for Carbon-Neutral Energy Research (I2CNER), Kyushu University, Fukuoka, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380861291386923904","@type":"Researcher","foaf:name":[{"@value":"Ahmad B. Ahmad"}],"jpcoar:affiliationName":[{"@value":"2Faculty of Engineering, Kyushu University, Fukuoka, Japan"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"08950695"},{"@type":"EISSN","@value":"19382057"}],"prism:publicationName":[{"@value":"Seismological Research Letters"}],"dc:publisher":[{"@value":"Seismological Society of America (SSA)"}],"prism:publicationDate":"2022-09-14","prism:volume":"94","prism:number":"1","prism:startingPage":"149","prism:endingPage":"158"},"reviewed":"false","dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","url":[{"@id":"https://pubs.geoscienceworld.org/ssa/srl/article-pdf/94/1/149/5756618/srl-2022049.1.pdf"}],"createdAt":"2022-09-14","modifiedAt":"2022-12-28","project":[{"@id":"https://cir.nii.ac.jp/crid/1040285300695363968","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"20H01997"},{"@type":"JGN","@value":"JP20H01997"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20H01997/"}],"notation":[{"@language":"ja","@value":"人工構造物の振動を利用した超高密度震源による地震探査とモニタリング手法の開発"},{"@language":"en","@value":"Geophysical imaging and monitoring of the subsurface structures using vibration of artificial structures"}]},{"@id":"https://cir.nii.ac.jp/crid/1040852814762362496","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"21H05202"},{"@type":"JGN","@value":"JP21H05202"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PLANNED-21H05202/"}],"notation":[{"@language":"ja","@value":"Slow-to-Fast地震発生帯の構造解剖と状態変化究明"},{"@language":"en","@value":"Anatomy of Slow-to-Fast seismogenic zones"}]},{"@id":"https://cir.nii.ac.jp/crid/1040855511112329728","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"22H05104"},{"@type":"JGN","@value":"JP22H05104"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-ORGANIZER-22H05104/"}],"notation":[{"@language":"ja","@value":"データ記述科学の戦略決定、拠点形成、および支援活動"}]}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050282810721887360","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Shear wave imaging from traffic noise 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Sites"},{"@language":"ja","@value":"海域CCSでの貯留CO<sub>2</sub>のリアルタイムモニタリング手法"}]},{"@id":"https://cir.nii.ac.jp/crid/1390023803774113152","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"安価で簡便な浸透率測定装置の開発"},{"@language":"en","@value":"Rapid and cost-effective system for permeability measurement"},{"@language":"ja-Kana","@value":"アンカ デ カンベン ナ シントウリツ ソクテイ ソウチ ノ カイハツ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390294960519491968","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Continuous Monitoring System for Safe and Effective CO<sub>2</sub> Geological Storage"},{"@language":"ja","@value":"CO<sub>2</sub>地中貯留の安全操業へ向けた連続モニタリングシステムの開発"}]},{"@id":"https://cir.nii.ac.jp/crid/1390297814401309952","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Multiple Drone Route Optimization for a Seismic Survey"},{"@language":"ja","@value":"弾性波探査のためのドローン群の巡回経路最適化"},{"@language":"ja-Kana","@value":"ダンセイハ タンサ ノ タメ ノ ドローングン ノ ジュンカイ ケイロ サイテキカ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390577298347806336","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Optimization of Drone-Based Surface-Wave Seismic Surveys Using a Multiple Traveling Salesman Problem"},{"@value":"Drone-based surface-wave seismic survey optimization via a multiple traveling salesman problem"}]},{"@id":"https://cir.nii.ac.jp/crid/1390866570019292672","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"安全なCCSに向けた連続モニタリング・モデリング技術"},{"@language":"en","@value":"Continuous monitoring and modeling for safe CCS"}]},{"@id":"https://cir.nii.ac.jp/crid/2050307417121629824","@type":"Article","resourceType":"学術雑誌論文(journal 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