Relative Location Analysis and Moment Tensor Inversion of the 2012 Gulf of Maine Earthquake Swarm
Notice bibliographique
Résumé
Research Article| December 06, 2017 Relative Location Analysis and Moment Tensor Inversion of the 2012 Gulf of Maine Earthquake Swarm Vanessa J. Napoli; Vanessa J. Napoli aWeston Geophysical Corp., 181 Bedford Street, Suite 1, Lexington, Massachusetts 02420 U.S.A., vnapoli@westongeo.com Search for other works by this author on: GSW Google Scholar John E. Ebel John E. Ebel bEarth and Environmental Sciences Department, Boston College, 141 Commonwealth Avenue, Devlin Hall, Chestnut Hill, Massachusetts 02467 U.S.A. Search for other works by this author on: GSW Google Scholar Author and Article Information Vanessa J. Napoli aWeston Geophysical Corp., 181 Bedford Street, Suite 1, Lexington, Massachusetts 02420 U.S.A., vnapoli@westongeo.com John E. Ebel bEarth and Environmental Sciences Department, Boston College, 141 Commonwealth Avenue, Devlin Hall, Chestnut Hill, Massachusetts 02467 U.S.A. Publisher: Seismological Society of America First Online: 06 Dec 2017 Online Issn: 1938-2057 Print Issn: 0895-0695 © Seismological Society of America Seismological Research Letters (2018) 89 (1): 229–240. https://doi.org/10.1785/0220170131 Article history First Online: 06 Dec 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Vanessa J. Napoli, John E. Ebel; Relative Location Analysis and Moment Tensor Inversion of the 2012 Gulf of Maine Earthquake Swarm. Seismological Research Letters 2017;; 89 (1): 229–240. doi: https://doi.org/10.1785/0220170131 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietySeismological Research Letters Search Advanced Search ABSTRACT Large magnitude offshore passive margin earthquakes are rare, making small magnitude events (Mw<4) the predominant data available to study the mechanisms of seismicity along passive margins. This study is focused on a swarm of events (MLg 2.1–3.9) that occurred from 2012 to 2013 in the Gulf of Maine (GM) along the Atlantic Passive Margin (APM) shelf break, a region with few previously recorded earthquakes. Relative locations were calculated for the earthquakes of the GM swarm and a moment tensor inversion method was used to calculate focal mechanisms for the two largest events in the swarm. The results of the relative location method constrained a fault orientation to a strike of 243°±3° and a dip of 25°±3°. From the regional moment tensor analysis, the focal depths of the largest events were between 12 and 18 km. For the largest event (MLg 3.9), the strike is 235°±1°, with a dip of 77.7°±0.8° and a rake of −116.5°±3°, and for the second largest event (MLg 3.7) the strike is 259°±3°, with a dip of 78°±2° and a rake of −58.8°±7°. By mapping the spatial extent of the relative hypocenters, a potential fault size of 2.7 km by 2.4 km is inferred. If this entire area were to rupture at once in a single earthquake it would have Mw 4.9–5.0. Based on Gutenberg–Richter relations (Gutenberg and Richter, 1944) from the eastern Canadian APM, if an Mw 7 can occur in the GM, its estimated mean repeat time is 2120–22,800 yrs. Because the geologic setting of the GM swarm is similar to that of the 1929 Mw 7.2 Grand Banks earthquake, an earthquake of Mw≥7 in the GM swarm area could be tsunamigenic. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,001 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,001 | 0,001 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».