The seismogenic tectonic of Anchorage Mw7.0 Earthquake in Alaska, November, 30, 2018

• Autorzy: Lei Dongning , Yang Gang

Identyfikatory

DOI

10.1007/s11600-020-00436-x

• Języki publikacji: EN

Abstrakty

EN

The Mw7.0 Anchorage earthquake is most signifcant event since 1964 Mw9.2. Far away subduction zone trace, thus the seismogenic structure and failure plane are not clear and keep disputed. Based on published data, including faults, aftershock, focal mechanism solutions and source fault model and so on, we make comprehensive analysis and discussion. We think that this earthquake belongs to plate subduction event, without relationship with Castle Mountain fault and Border Ranges fault for seismogenic structure, only earthquake-controlling structure. Both faults are not responsible for the Anchorage earthquake. The actual seismogenic fault plane has a south-to-north trending and dips to east, which is corresponding to the nodal plane I.

Słowa kluczowe

EN

seismogenic structure pattern; Coulomb stress changes; aftershocks; active fault systems; Anchorage Mw7.0 earthquake

PL

wzór struktury sejsmogennej; zmiany naprężenia Coulomba; wstrząs wtórny; aktywne systemy błędów

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2020
• Tom: Vol. 68, no. 3
• Strony: 619--626
• Opis fizyczny: Bibliogr. 14 poz.

Twórcy

autor

Lei Dongning

• Key Laboratory of Earthquake Geodesy, Institute of Seismology, China Earthquake Administration, Wuhan, China
• Wuhan Institute of Earthquake Engineering Co., Ltd., Wuhan, China

autor

Yang Gang

• Key Laboratory of Earthquake Geodesy, Institute of Seismology, China Earthquake Administration, Wuhan, China
• Wuhan Institute of Earthquake Engineering Co., Ltd., Wuhan, China

Bibliografia

• 1. Detterman RL, Plafker G, Travis H, Tysdal RG, Pavoni N (1974) Surface geology and Holocene breaks along the Susitna segment of the Castle Mountain fault, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF–618, scale 1:24,000
• 2. Haeussler PJ (1998) Surficial geologic map along the Castle Mountain fault between Houston and Hatcher Pass Road, Alaska. Center for Integrated Data Analytics Wisconsin Science Center
• 3. Hayes GP, Moore GL, Portner DE, Hearne M, Flamme H, Furtney M, Smoczyk GM (2018) Slab2 a comprehensive subduction zone geometry model. Science, eaat4723-
• 4. King GCP, Stein RS, Jian L (1994) Static stress changes and the triggering of earthquakes. Bull Seismol Soc Am 78(3):935–953
• 5. Mankhemthong N, Doser DI, Baker MR, Kaip GM, Eslick BE, Jones S, Eslick BE (2010) Modeling gravity data from a recent (2009–2010) survey across the border ranges fault system, Alaska. Paper presented at the Agu Fall Meeting
• 6. NGL (Nevada Geodetic Laboratory) (2018) Anchorage earthquake coseismic displacement (December 1, 2018). http://geodesy.unr.edu//
• 7. Parry WT, Bunds MP, Bruhn RL, Hall CM, Murphy JM (2001) Mineralogy 40Ar/39Ar dating and apa-tite fission track dating of rocks along the Castle Mountain fault. Alaska Tectonophysics 337(3–4):149–172
• 8. Stein RS (1999) The role of stress transfer in earthquake occurrence. Nature 402:605. https://doi.org/10.1038/45144
• 9. Stein RS (2003) Earthquake conversations. Sci Am 288:72–79
• 10. Temblor (2018) Exotic M = 7.0 earthquake strikes beneath Anchorage, Alaska. http://temblor.net/earthquake-insights/exotic-m7-0-earthquake-strikes-beneath-anchorage-alaska-8010/(posted on November 30, 2018 by temblor)
• 11. USGS (2018) M 7.0–14 km NNW of Anchorage, Alaska. https://earthquake.usgs.gov/earthquakes/eventpage/ak20419010/executive(last updated 2018-12-08 01:01:06 (UTC))
• 12. Wessel P, Smith WHF (1995) New version of the generic mapping Tools released. Eos Tran. AGU 76:329
• 13. Willis JB, Haeussler PJ, Bruhn RL, Willis GC (2007) Holocene slip rate for the western segment of the castle mountain fault, Alaska. Bull Seismol Soc Am 97(3):1019–1024
• 14. Wilson FH, Hults CP, Mull CG, Karl SM (2015) Geologic map of Alaska: U.S. Geological survey scientific investigations map 3340, pamphlet 197 p., 2 sheets, scale 1:1,584,000. http://dx.doi.org/10.3133/sim3340

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021)