The 16 March 1999 mN 5.1 Cote-Nord Earthquake: The Largest Earthquake Ever Recorded in the Lower St. Lawrence Seismic Zone, Canada
Notice bibliographique
Résumé
Other| March 01, 2004 The 16 March 1999 mN 5.1 Côte-Nord Earthquake: The Largest Earthquake Ever Recorded in the Lower St. Lawrence Seismic Zone, Canada Maurice Lamontagne; Maurice Lamontagne Natural Hazards Program Natural Resources Canada 588 Booth Street Ottawa, Ontario Canada K1A OY7 malamont@nrcan.gc.ca (M.L.) Search for other works by this author on: GSW Google Scholar Allison L. Bent; Allison L. Bent Geological Survey of Canada 7 Observatory Crescent Ottawa, Ontario Canada K1A OY3 (A.L.B., C.R.D.W., S.M., V.R) Search for other works by this author on: GSW Google Scholar Catherine R. D. Woodgold; Catherine R. D. Woodgold Geological Survey of Canada 7 Observatory Crescent Ottawa, Ontario Canada K1A OY3 (A.L.B., C.R.D.W., S.M., V.R) Search for other works by this author on: GSW Google Scholar Shutian Ma; Shutian Ma Geological Survey of Canada 7 Observatory Crescent Ottawa, Ontario Canada K1A OY3 (A.L.B., C.R.D.W., S.M., V.R) Search for other works by this author on: GSW Google Scholar Veronika Peci Veronika Peci Geological Survey of Canada 7 Observatory Crescent Ottawa, Ontario Canada K1A OY3 (A.L.B., C.R.D.W., S.M., V.R) Search for other works by this author on: GSW Google Scholar Author and Article Information Maurice Lamontagne Natural Hazards Program Natural Resources Canada 588 Booth Street Ottawa, Ontario Canada K1A OY7 malamont@nrcan.gc.ca (M.L.) Allison L. Bent Geological Survey of Canada 7 Observatory Crescent Ottawa, Ontario Canada K1A OY3 (A.L.B., C.R.D.W., S.M., V.R) Catherine R. D. Woodgold Geological Survey of Canada 7 Observatory Crescent Ottawa, Ontario Canada K1A OY3 (A.L.B., C.R.D.W., S.M., V.R) Shutian Ma Geological Survey of Canada 7 Observatory Crescent Ottawa, Ontario Canada K1A OY3 (A.L.B., C.R.D.W., S.M., V.R) Veronika Peci Geological Survey of Canada 7 Observatory Crescent Ottawa, Ontario Canada K1A OY3 (A.L.B., C.R.D.W., S.M., V.R) Publisher: Seismological Society of America First Online: 09 Mar 2017 Online ISSN: 1938-2057 Print ISSN: 0895-0695 © 2004 by the Seismological Society of America Seismological Research Letters (2004) 75 (2): 299–316. https://doi.org/10.1785/gssrl.75.2.299 Article history First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Maurice Lamontagne, Allison L. Bent, Catherine R. D. Woodgold, Shutian Ma, Veronika Peci; The 16 March 1999 mN 5.1 Côte-Nord Earthquake: The Largest Earthquake Ever Recorded in the Lower St. Lawrence Seismic Zone, Canada. Seismological Research Letters 2004;; 75 (2): 299–316. doi: https://doi.org/10.1785/gssrl.75.2.299 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 On 16 March 1999 at 12:50 UT, a moderate earthquake of mN 5.1 occurred in the Lower St. Lawrence Seismic Zone (LSZ), 60 km south of Sept-Îles, Québec. Due to its location under the St. Lawrence River, more than 50 km away from inhabited areas, the earthquake was named the Côte-Nord earthquake (the French name for the Quebec North Shore region along the St. Lawrence River). In this zone, approximately 60 events are located yearly; historically, only one earthquake was nearly as large as the Côte-Nord event. Felt up to 300 km distant, the mainshock did not cause any damage. Peak ground accelerations of 0.22 g and 0.13 g were measured at epicentral distances of 130 km and 360 km by digital accelerographs. Three different determination methods each suggest a depth of approximately 20 km, within the Precambrian basement. A mixed strike-slip/reverse-faulting focal mechanism was obtained using regional data. Surface-wave inversion suggests a similar solution but with slightly different nodal planes. No foreshock was recorded by the regional network, which has a mN 2.0 detection threshold. The number of aftershocks was anomalously high for a mN 5.1 mainshock; more than 75 aftershocks with mN ranging from 0.9 to 3.5 were recorded in the 30 days following the mainshock. Characteristic parameters of aftershock decay were normal. Within these aftershocks, five doublets and one triplet were found, representing 13 out of 77 events. We interpret the northwest-southeast nodal plane to be the fault plane for the mainshock from the preferred alignment of aftershocks and from the orientation of nearby magnetic and gravimetric lineaments. This orientation is, however, different from the general assumption that northeast-southwest faults are those reactivated in the current local stress field. 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 machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,002 |
| Méta-épidémiologie (sens strict) | 0,001 | 0,000 |
| Méta-épidémiologie (sens large) | 0,001 | 0,001 |
| Bibliométrie | 0,004 | 0,012 |
| Études des sciences et des technologies | 0,004 | 0,001 |
| Communication savante | 0,003 | 0,001 |
| Science ouverte | 0,001 | 0,002 |
| Intégrité de la recherche | 0,001 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,196 | 0,092 |
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 source (Gemma direct ou Codex distillé), 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 ».