Results 21 to 30 of about 856,490 (172)

Salt shell fallout during the ash eruption at the Nakadake crater, Aso volcano, Japan: evidence of an underground hydrothermal system surrounding the erupting vent

Earth, Planets and Space, 2018
A hot and acid crater lake is located in the Nakadake crater, Aso volcano, Japan. The volume of water in the lake decreases with increasing activity, drying out prior to the magmatic eruptions. Salt-rich materials of various shapes were observed, falling
Hiroshi Shinohara, Nobuo Geshi, Akihiko Yokoo, Takahiro Ohkura, Akihiko Terada   +4 more
doaj   +1 more source

Geochemical monitoring of volcanic lakes. A generalized box model for active crater lakes

Annals of Geophysics, 2011
<p>In the past, variations in the chemical contents (SO42&minus;, Cl&minus;, cations) of crater lake water have not systematically demonstrated any relationships with eruptive activity.
Franco Tassi, Dmitri Rouwet
doaj   +1 more source

Complex Drilling Logistics for Lake El’gygytgyn, NE Russia [PDF]

Scientific Drilling, 2009
Lake El’gygytgyn was formed by astrophysical chance when a meteorite struck the Earth 100 km north of the Arctic Circle in Chukotka 3.6 Myrs ago (Layer, 2000) on the drainage divide between the Arctic Ocean and the Bering Sea.
Martin Melles,, Julie Brigham-Grette
doaj   +1 more source

Drone monitoring of volcanic lakes in Costa Rica: a new approach

Drone Systems and Applications, 2023
For the first time ever, samples were collected from volcanic lake waters in Costa Rica using an unmanned aerial vehicle (drone), which represents a major achievement in human–machine interaction and innovation in the technology sector. A Matrice 600 Pro
José P. Sibaja-Brenes, Akihiko Terada, Rosa Alfaro Solís, Mario Cambronero Luna, Danilo Umaña Castro, Daniel Porras Ramírez, Rolando Sánchez Gutiérrez, Mariela Martínez Arroyo, Ian Godfrey, María Martínez Cruz   +9 more
doaj   +1 more source

Hydrochemical and Hydroacoustic Investigation of the Yugama Acid Crater Lake, Kusatsu-Shirane, Japan

Frontiers in Earth Science, 2021
The gases dissolved in the waters of volcanic lakes can present a serious hazard if the physical-chemical conditions change due to variations in the supply of magmatic gases.
Pedro A. Hernández, Pedro A. Hernández, Kenji Nogami, Eleazar Padrón, Eleazar Padrón, Luis Somoza, Cecilia Amonte, Cecilia Amonte, Toshiya Mori, Gladys V. Melián, Gladys V. Melián, Hirochicka Sumino, Yoshikazu Kikawada, Nemesio M. Pérez, Nemesio M. Pérez   +14 more
doaj   +1 more source

Sequence of infilling events in Gale crater, Mars: Results from morphology, stratigraphy, and mineralogy [PDF]

, 2013
Gale Crater is filled by sedimentary deposits including a mound of layered deposits, Aeolis Mons. Using orbital data, we mapped the crater infillings and measured their geometry to determine their origin.
Fueten, F., Hauber, E., Rossi, A.P., Jaumann, R., Frank Fueten, Laetitia Le Deit, Ernst Hauber, Pondrelli, M., Ralf Jaumann, Rossi, A.,, Rossi, A., P, Pondrelli, M, Le Deit, L., Angelo Pio Rossi, Monica Pondrelli, Le Deit, Laetitia   +15 more
core   +1 more source

ANCAMAN ERUPSI KAWAH IJEN TERHADAP MASYARAKAT LERENG IJEN (KABUPATEN BONDOWOSO)

ASANKA, 2020
Ijen caldera complex is a volcano that has a 7 km diameter elliptical caldera which only leaving a northern caldera wall curving towards the southward.
Dhimas Bagus Virgiawan
doaj   +1 more source

Phylogeography, colonization and population history of the Midas cichlid species complex (Amphilophus spp.) in the Nicaraguan crater lakes

BMC Evolutionary Biology, 2010
Background Elucidation of the mechanisms driving speciation requires detailed knowledge about the phylogenetic relationships and phylogeography of the incipient species within their entire ranges as well as their colonization history.
Meyer Axel, Barluenga Marta
doaj   +1 more source

Geophysical characterization of hydrothermal systems and intrusive bodies, El Chichón volcano (Mexico) [PDF]

, 2011
[1] The 1982 explosive eruptions of El Chichón volcano (Chiapas, Mexico) destroyed the inner dome and created a 1-km-wide and 180-m-deep crater within the somma crater.
Roach, Michael, Nick Varley, Michael Roach, Jutzeler, Martin, Martin Jutzeler, Varley, Nick   +5 more
core   +1 more source

Rare Earth Elements Variations in a Hyperacid Crater Lake and Their Relations With Changes in Phreatic Activity, Physico-Chemical Parameters, and Chemical Composition: The Case of Poás Volcano (Costa Rica)

Frontiers in Earth Science, 2022
Decades of geochemical monitoring at active crater lakes worldwide have confirmed that variations in major elements and physico-chemical parameters are useful to detect changes in volcanic activity.
Sabrina Pappaterra, Claudio Inguaggiato, Claudio Inguaggiato, Dmitri Rouwet, Raúl Mora-Amador, Carlos Ramírez-Umaña, Gino González, Gino González, Gino González, Lorenzo Brusca, Loic Peiffer, Gilles Levresse, Sergio Bellomo   +12 more
doaj   +1 more source