Sökning: onr:"swepub:oai:DiVA.org:uu-481680" >
Seismic tremor reve...
Seismic tremor reveals slow fracture propagation prior to the 2018 eruption at Sierra Negra volcano, Galapagos
-
- Li, Ka Lok (författare)
- Uppsala universitet,Geofysik,Dublin Inst Adv Studies, Sch Cosm Phys, Geophys Sect, Dublin, Ireland.
-
- Bean, Christopher J. (författare)
- Dublin Inst Adv Studies, Sch Cosm Phys, Geophys Sect, Dublin, Ireland.
-
- Bell, Andrew F. (författare)
- Univ Edinburgh, Sch Geosci, Edinburgh, Midlothian, Scotland.
-
visa fler...
-
- Ruiz, Mario (författare)
- Escuela Politec Nacl, Inst Geofis, Quito, Ecuador.
-
- Hernandez, Stephen (författare)
- Escuela Politec Nacl, Inst Geofis, Quito, Ecuador.
-
- Grannell, James (författare)
- Dublin Inst Adv Studies, Sch Cosm Phys, Geophys Sect, Dublin, Ireland.
-
visa färre...
-
(creator_code:org_t)
- Elsevier, 2022
- 2022
- Engelska.
-
Ingår i: Earth and Planetary Science Letters. - : Elsevier. - 0012-821X .- 1385-013X. ; 586
- Relaterad länk:
-
https://doi.org/10.1...
-
visa fler...
-
https://uu.diva-port... (primary) (Raw object)
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Seismic tremor observed near active volcanoes is an important tool for volcano monitoring as it often appears shortly before eruptions. Although tremor can be generated by a variety of physical processes it is usually interpreted as direct evidence for flowing magma in the sub-surface. These interpretations typically feed into risk assessments for potential eruptions. Using the temporal evolution of tremor amplitude and spectral data from a distributed seismic network that captured the 2018 eruption at Sierra Negra in Galapagos, we determine that tremor is not directly related to sub-surface fluid movement. Instead at Sierra Negra tremor likely indicates a slowly propagating fracture, which is later exploited as a pathway for silent magma flow. Distinct differences in the source migration and the spectral character of pre-eruptive and co-eruptive tremor allow both a location estimate of the future eruption site and a precise timing of the eruption onset.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Annan geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Other Earth and Related Environmental Sciences (hsv//eng)
Nyckelord
- volcanic tremor
- spectral analysis
- tremor location
- tremor source process
- dike propagation
- Sierra Negra
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas