Results 51 to 60 of about 3,592,930 (158)

Seismic characterization of pyroclastic flow activity at Soufrière Hills Volcano, Montserrat, 8 January 2007 [PDF]

Natural Hazards and Earth System Sciences, 2007
A partial dome collapse with concurrent pyroclastic flow (PF) activity occurred at Soufrière Hills Volcano (SHV), Montserrat on 8 January 2007. Pyroclastic density currents were observed to propagate from the Northwest and West sectors of the summit dome
S. De Angelis, V. Bass, V. Hards, G. Ryan   +3 more
doaj  

Evaluating emplacement temperature of a 1000-year sequence of mass flows using paleomagnetism of their deposits at Mt. Taranaki, New Zealand

Volcanica, 2019
Temperature can be an important characteristic used to distinguish primary pyroclastic density currents or block-and-ash flows from other collapses not primarily related to an eruption, and also governs the type and level of hazard presented by these ...
Geoffrey A Lerner, Shane J Cronin, Gillian M Turner   +2 more
doaj   +1 more source

Inverting sediment bedforms for evaluating the hazard of dilute pyroclastic density currents in the field

Scientific Reports, 2021
Pyroclastic density currents are ground hugging gas-particle flows associated to explosive volcanic eruptions and moving down a volcano's slope, causing devastation and deaths.
Pierfrancesco Dellino, Fabio Dioguardi, Anna Rinaldi, Roberto Sulpizio, Daniela Mele   +4 more
doaj   +1 more source

Late Pliocene–Quaternary Arc Volcanism at the Southern Limit of the Hikurangi Subduction Zone: Revised Chronology of the Taranaki Peninsula, New Zealand

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 4, December 2026.
Igneous centres across the Taranaki Peninsula represent the southwestern limit of arc volcanism associated with the Tonga–Kermadec–Hikurangi subduction system. Taranaki Maunga, the youngest and largest of three andesitic stratovolcanoes, dominates the geomorphology of the Taranaki Peninsula along with the eroded remnants of the Kaitake and Pouakai ...
G. P. Thrasher, M. W. Sagar, H. Seebeck, G. P. D. Viskovic   +3 more
wiley   +1 more source

Characteristics of Pyroclastic Flow at Sakurajima Volcano's Showa Crater [PDF]

, 2018
Eruptions at the Showa crater become active since 2008 and are sometimes accompanied with small pyroclastic flows. It is important to understand the mechanism of generation of the pyroclastic flow for volcanic disaster prevention.
為栗, 健, 井口, 正人
core  

Estimating Sub‐Pixel Temperatures During Volcanic Eruptions Using Dual‐Band Thermal Imaging Technique: Case Studies From Whakaari/White Island (New Zealand) and Tofua (Tonga)

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 4, December 2026.
This study presents the first application of a dual‐band satellite thermal monitoring technique in New Zealand and Tonga, using the 2019 eruption of Whakaari/White Island and the persistently active Lofia crater on Tofua volcano as case studies. At Whakaari/White Island, near‐synchronous Landsat‐8 and Sentinel‐2A data (16 min interval) were analysed ...
Salman Ashraf, Geoff Kilgour, Jenny Black, Muhammad Aufaristama   +3 more
wiley   +1 more source

High Potash Volcanic Rocks and Pyroclastic Deposits of Damavand Volcano, Iran, an Example of Intraplate Volcanism [PDF]

Journal of Sciences, Islamic Republic of Iran, 2017
Damavand is a fascinating dormant stratovolcano, 60 km to the ENE of Tehran located in the Alborz Mountains. Damavand volcanic products consist of lava flows and pyroclastic fall, flow and surge deposits from different eruption cycles. The volcanic rocks
M. Mortazavi
doaj  

Building a Continental‐Scale Geodetic Network: The Plate Boundary Observatory (PBO)

Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Abstract The Plate Boundary Observatory (PBO) transformed the use of geodesy in North America to study crustal deformation and plate boundary processes by establishing a continental‐scale, standardized, open‐access geodetic network. Built and operated by UNAVCO between 2003 and 2018 as part of the National Science Foundation (NSF)‐funded EarthScope ...
Emily E. Zawacki, Michael E. Jackson, Glen S. Mattioli, David J. Mencin, Karl Feaux, Donna J. Charlevoix   +5 more
wiley   +1 more source

Quantifying Bulk Silica of Felsic and Mafic Lithologies on Mars

Geophysical Research Letters, Volume 53, Issue 22, 28 November 2026.
Abstract On Earth, silica‐rich volcanism is typically associated with convergent plate boundaries, yet Mars, a stagnant‐lid body, also hosts regions with silicic lithologies. Here, we introduce a novel approach to directly estimate bulk silica (SiO2 wt.%) using multispectral data and machine learning.
Nandita Kumari, Carlos Gary‐Bicas, Cheng Ye, A. Deanne Rogers, Timothy D. Glotch, John F. Mustard   +5 more
wiley   +1 more source

Notes on the pyroclastic flow deposits newly found from wells at the ruins of Kagoshima Castle, Kagoshima City [PDF]

, 2016
Pyroclastic flow deposits were found from three wells drilled for survey of basement rocks on the ruins of Kagoshima Castle, Kagoshima City. This pyroclastic flow deposits are overlain by the Shiroyama Formation which is marine sediments in the last ...
OHKI, Kimihiko, FURUSAWA, Akira, 古澤, 明, NAKAHARA, Kazunari, 大木, 公彦, 中原, 一成   +5 more
core