Noise-based seismic monitoring of the Campi Flegrei caldera
Sign Up to like & getrecommendations! Published in 2017 at "Geophysical Research Letters"
DOI: 10.1002/2016gl072477
Abstract: The Campi Flegrei caldera is one of the highest risk volcanic fields worldwide, because of its eruptive history and the large population hosted within the caldera. It experiences bradiseismic crises: sudden uplift with low energetic… read more here.
Keywords: seismic monitoring; noise based; flegrei caldera; campi flegrei ... See more keywords
Native gold and gold-rich sulfide deposits in a submarine basaltic caldera, Higashi-Aogashima hydrothermal field, Izu-Ogasawara frontal arc, Japan
Sign Up to like & getrecommendations! Published in 2018 at "Mineralium Deposita"
DOI: 10.1007/s00126-018-0808-2
Abstract: Sulfide deposits with extremely high Au concentrations (up to 275 ppm; avg. 102 ppm, n = 15), high Au/Ag ratios (0.24, n = 15), and low Cu/(Cu + Zn) ratios (0.03, n = 15) were discovered in 2015 in active hydrothermal fields at a water… read more here.
Keywords: sulfide deposits; arc; sulfide; gold ... See more keywords
The geochemical and petrological characteristics of prenatal caldera volcano: a case of the newly formed small dacitic caldera, Hijiori, Northeast Japan
Sign Up to like & getrecommendations! Published in 2017 at "Contributions to Mineralogy and Petrology"
DOI: 10.1007/s00410-017-1391-8
Abstract: Evaluating the magma depth and its physical properties is critical to conduct a better geophysical assessment of magma chambers of caldera volcanoes that may potentially cause future volcanic hazards. To understand pre-eruptive conditions of a… read more here.
Keywords: chamber; bulk; caldera volcano; magma ... See more keywords
Magnetotelluric imaging of the resurgent caldera on the island of Ischia (southern Italy): inferences for its structure and activity
Sign Up to like & getrecommendations! Published in 2017 at "Bulletin of Volcanology"
DOI: 10.1007/s00445-017-1170-4
Abstract: The island of Ischia (located in the Bay of Naples, Italy) represents a peculiar case of a well-exposed caldera that has experienced a large (>800 m) and rapid resurgence, accompanied by volcanic activity. What drives the… read more here.
Keywords: island ischia; island; caldera; resurgence ... See more keywords
Caldera unrest detected with seawater temperature anomalies at Deception Island, Antarctic Peninsula
Sign Up to like & getrecommendations! Published in 2018 at "Bulletin of Volcanology"
DOI: 10.1007/s00445-018-1216-2
Abstract: Increased thermal activity was detected to coincide with the onset of volcano inflation in the seawater-filled caldera at Deception Island. This thermal activity was manifested in pulses of high water temperature that coincided with ocean… read more here.
Keywords: temperature; deception island; seawater temperature; caldera ... See more keywords
Event stratigraphy and emplacement mechanisms of the last major caldera eruption on Sete Cidades Volcano (São Miguel, Azores): the 16 ka Santa Bárbara Formation
Sign Up to like & getrecommendations! Published in 2018 at "Bulletin of Volcanology"
DOI: 10.1007/s00445-018-1250-0
Abstract: Sete Cidades is an active yet dormant central volcano located in the westernmost part of São Miguel Island (Azores archipelago), characterized by a 5-km-wide multi-stage caldera formed in the last 36 ka. In this work, we… read more here.
Keywords: santa rbara; eruption; formation; sete cidades ... See more keywords
Accumulation of rhyolite magma and triggers for a caldera-forming eruption of the Aira Caldera, Japan
Sign Up to like & getrecommendations! Published in 2020 at "Bulletin of Volcanology"
DOI: 10.1007/s00445-020-01384-6
Abstract: The sudden destabilization of voluminous magma after stable accumulation in a crustal magma chamber is a key process in the sequence of a catastrophic caldera-forming eruption. We investigated the petrological characteristics of magma that has… read more here.
Keywords: forming eruption; rhyolite magma; magma; caldera forming ... See more keywords
Spatio-temporal hazard estimation in the central silicic part of Taupo Volcanic Zone, New Zealand, based on small to medium volume eruptions
Sign Up to like & getrecommendations! Published in 2020 at "Bulletin of Volcanology"
DOI: 10.1007/s00445-020-01392-6
Abstract: We explore how volcanic hazards in a silicic volcanism-dominated caldera systems can be assessed by spatial and spatio-temporal statistical models using similar treatment to that applied to dispersed mafic monogenetic volcanic fields. The central part… read more here.
Keywords: volcanic zone; taupo volcanic; spatio temporal; part taupo ... See more keywords
Magma plumbing beneath collapse caldera volcanic systems
Sign Up to like & getrecommendations! Published in 2018 at "Earth-Science Reviews"
DOI: 10.1016/j.earscirev.2017.12.002
Abstract: Abstract Advancing our knowledge of caldera volcanoes enables better assessment of hazard and more efficient harnessing of resources. In this paper we review developments in concepts of magma storage and transport during the life cycle… read more here.
Keywords: eruption; plumbing beneath; magma plumbing; magma ... See more keywords
Evidence for cross rift structural controls on deformation and seismicity at a continental rift caldera
Sign Up to like & getrecommendations! Published in 2018 at "Earth and Planetary Science Letters"
DOI: 10.1016/j.epsl.2018.01.037
Abstract: Abstract In continental rifts structural heterogeneities, such as pre-existing faults and foliations, are thought to influence shallow crustal processes, particularly the formation of rift faults, magma reservoirs and surface volcanism. We focus on the Corbetti… read more here.
Keywords: rift; deformation; cross rift; structure ... See more keywords
Seismic imaging of Santorini: Subsurface constraints on caldera collapse and present-day magma recharge
Sign Up to like & getrecommendations! Published in 2019 at "Earth and Planetary Science Letters"
DOI: 10.1016/j.epsl.2019.02.033
Abstract: Abstract Volcanic calderas are surface depressions formed by roof collapse following evacuation of magma from an underlying reservoir. The mechanisms of caldera formation are debated and predict differences in the evolution of the caldera floor… read more here.
Keywords: collapse; magma recharge; density; present day ... See more keywords