Inferring the magmatic roots of volcano-geothermal systems in the Rotorua Caldera and Okataina Volcanic Centre from magnetotelluric models

EA Bertrand, P Kannberg, TG Caldwell, W Heise… - Journal of Volcanology …, 2022 - Elsevier
To investigate the underlying magmatic systems that drive high-temperature geothermal
fields and volcanism in the north-central Taupo Volcanic Zone (TVZ), we use a combination …

Magmatic fluid pathways in the upper crust: insights from dense magnetotelluric observations around the Kuju Volcanoes, Japan

K Aizawa, M Utsugi, K Kitamura… - Geophysical Journal …, 2022 - academic.oup.com
Magnetotelluric (MT) observations have revealed subvertical electrical conductors that
extend from shallow depths into the mid-crust at various geothermal zones, active volcanoes …

Hydrothermal and magmatic system of a volcanic island inferred from magnetotellurics, seismicity, self‐potential, and thermal image: an example of Miyakejima …

M Gresse, M Uyeshima, T Koyama… - Journal of …, 2021 - Wiley Online Library
Phreatic and phreatomagmatic eruptions represent some of the greatest hazards occurring
on volcanoes. They result from complex interactions at a depth between rock, water, and …

Three‐dimensional resistivity structure of Iwo‐Yama volcano, kirishima volcanic complex, Japan: Relationship to shallow seismicity, surface uplift, and a small phreatic …

K Tsukamoto, K Aizawa, K Chiba… - Geophysical …, 2018 - Wiley Online Library
Iwo‐yama volcano, part of the Kirishima Volcanic Complex, has recently shown signs of
unrest. We conducted a hypocenter relocation of shallow earthquakes and broadband …

Geophysical characterization of the Northwest Geysers geothermal field, California

JR Peacock, TE Earney, MT Mangan… - Journal of Volcanology …, 2020 - Elsevier
Abstract The Clear Lake Volcanic Field in northern California is the youngest and northern-
most part of a long-lived volcanic system that has produced recent (~ 10 ka) eruptions …

Modeling a fractured geothermal reservoir using 3-D AMT data inversion: insights from Garibaldi Volcanic Belt, British Columbia, Canada

FH Ghalati, JA Craven, D Motazedian, SE Grasby… - Geothermics, 2022 - Elsevier
An audio-magnetotelluric (AMT) survey was conducted to explore for shallow geothermal
resources in the Garibaldi Volcanic Belt, the location of which has the highest geothermal …

Magmatic hydrothermal system inferred from the resistivity structure of Kusatsu-Shirane Volcano

Y Matsunaga, W Kanda, S Takakura, T Koyama… - Journal of Volcanology …, 2020 - Elsevier
Abstract The Kusatsu-Shirane volcano is a Quaternary andesitic-to-dacitic active volcano
located on the central Honshu Arc. The volcano is known to have had repeated phreatic …

Imaging the deep source of the Rotorua and Waimangu geothermal fields, Taupo Volcanic Zone, New Zealand

W Heise, TG Caldwell, EA Bertrand, GJ Hill… - Journal of Volcanology …, 2016 - Elsevier
Magnetotelluric data were recorded in a 45× 10 km band crossing the Rotorua and
Waimangu geothermal fields in the northern part of the Taupo Volcanic Zone in the central …

Matrix permeability of reservoir rocks, Ngatamariki geothermal field, Taupo Volcanic Zone, New Zealand

JL Cant, PA Siratovich, JW Cole, MC Villeneuve… - Geothermal …, 2018 - Springer
Abstract The Taupo Volcanic Zone (TVZ) hosts 23 geothermal fields, seven of which are
currently utilised for power generation. Ngatamariki geothermal field (NGF) is one of the …

Lithospheric electrical structure beneath the Cathaysia Block in South China and its tectonic implications

Y Cheng, B Han, Y Li, J Guo, X Hu - Tectonophysics, 2021 - Elsevier
To better constrain the heat source of the geothermal system and lithospheric thinning
mechanism of the Paleo-Pacific subduction zone, data from 35 broadband magnetotelluric …