Results 61 to 70 of about 301,733 (364)

Comparison of Microbial Diversity of Two Typical Volcanic Soils in Wudalianchi, China

Microorganisms
Volcanic lava is an excellent model of primary succession, in which basalt-associated microorganisms drive the cycling of different elements such as nitrogen, carbon, and other nutrients. Microbial communities in volcanic soils are of particular interest
Qingyang Huang, Fan Yang, Hongjie Cao, Jiahui Cheng, Mingyue Jiang, Maihe Li, Hongwei Ni, Lihong Xie   +7 more
doaj   +1 more source

Thermal structure of a gas-permeable lava dome and timescale separation in its response to perturbation [PDF]

, 2009
The thermal boundary layer at the surface of a volcanic lava dome is investigated through a continuum model of the thermodynamic advection diffusion processes resulting from magmatic gas flow through the dome matrix.
Adrian J. Matthews, Balmforth, Balmforth, Barclay, Barclay, Bourgouin, Calder, Carn, Costa, Couch, Dragoni, Dzurisin, Edmonds, Edmonds, Edmonds, Elsworth, Fink, Francis, Hale, Hale, Hammouya, Herd, Hicks, Hinch, Iverson, Mark J. Cooker, Mastin, Matthews, Matthews, McNutt, McNutt, Melnik, Melnik, Nakada, Neri, Neuberg, Oppenheimer, Peter D. Hicks, Sato, Sigurdsson, Simmons, Sparks, Sparks, Spera, Taron, Urai, Vaughan, Watts, Woods, Yamasato   +49 more
core   +1 more source

Optimal mud pressure design using nonlinear failure criteria for wellbores in shaley sedimentary reservoir

Deep Underground Science and Engineering, EarlyView.
The present study uses the Modified Mohr‐Coulomb true‐triaxial failure criterion (MMC_TT), which predicts the strength of rock better than the MGC criterion in laboratory true‐triaxial tests to overcome the limitations. Moreover, based on the data from previously published five vertical wells in the Krishna‐Godavari basin (K‐G basin), an empirical ...
Ravindra K. Burnwal, Aditya Singh
wiley   +1 more source

Tube coalescence in the Jingfudong lava tube and implications for lava flow hazard of Tengchong volcanism

International Journal of Speleology, 2016
Tube-fed structure occurs as a general phenomenon in Tengchong basic lavas, such as lava tubes, lava plugs and tube-related collapse depressions. We deduced the development of Laoguipo lava flows, which is the longest lava tube (Jingfudong lava tube ...
Zhengquan Chen, Yongshun Liu, Haiquan Wei, Jiandong Xu, Wenfeng Guo   +4 more
doaj   +1 more source

Rhyolite lava dome growth styles at Chaitén Volcano, Chile (2008-2009):Interpretation of thermal imagery [PDF]

, 2013
Artículo de publicación ISIAirborne thermal images of the Chaitén rhyolite lava dome were obtained on three occasions between January 2009 and January 2010.
Bernstein, Marc, Calder, Eliza S., Pavez, Andrés, Varley, Nick, Whelley, Patrick   +4 more
core   +2 more sources

Quantifying landscape‐level biodiversity change in an island ecosystem: a 50‐year assessment of shifts in the Hawaiian avian community

Ecography, EarlyView.
Hawaii has experienced profound declines in native avifauna alongside the introduction of numerous bird species. While site‐specific population studies are common, landscape‐level analyses of avian population dynamics are rare, particularly in island ecosystems. To address this gap, we used a density surface model to create a spatio‐temporal projection
Trevor Bak, Lucas Berio Fortini, Noah Hunt, Paul Banko, Lena Schnell, Richard J. Camp   +5 more
wiley   +1 more source

Evidence From Microscopy and U–Pb Geochronology as a Clue to the Influence of the Cretaceous Magmatism in the Diagenesis of Pre‐Salt Carbonate Reservoirs in the Santos Basin (Brazil)

Geological Journal, EarlyView.
Carbonates from Santos Basin revealed U–Pb ages correlated with basalt ages (A), suggesting that they were formed during magmatic events. These events placed hot CO2 in the reservoir, which, when mixed with carbonate‐rich cold water (B), led to thermal convection, enabling the formation of the U contained in the carbonates.
Marco António Ruivo de Castro e Brito, Cristiano Leite Sombra, Davy Raeder Brandão, Cleverson Guizan Silva, Sidney Luiz de Matos Mello, Eugênio Vaz dos Santos Neto, Rui Jorge Fernandes Baptista, Ramsés Capilla, Luiz Antônio Pierantoni Gambôa   +8 more
wiley   +1 more source

Volcanic Hot-Spot Detection Using SENTINEL-2: A Comparison with MODIS−MIROVA Thermal Data Series [PDF]

, 2020
In the satellite thermal remote sensing, the new generation of sensors with high-spatial resolution SWIR data open the door to an improved constraining of thermal phenomena related to volcanic processes, with strong implications for monitoring ...
Cigolini, Corrado, Coppola, Diego, Laiolo, Marco, Massimetti, Francesco, Ripepe, Maurizio, Valade, Sébastien   +5 more
core   +1 more source

Hydrochemical Characteristics of Four Retreating Glacier Forefields Off the Coast of Admiralty Bay (King George Island, Maritime Antarctic): Diverse Sources of Metals and Metalloids

Land Degradation &Development, EarlyView.
ABSTRACT This study examines the impact of geological, marine and anthropogenic sources on metal and metalloid concentrations in the forefields of four glaciers (Ecology, Sphinx, Tower and Windy) on King George Island, Antarctic. Water samples were collected at the beginning and end of the hydrological season (austral summer, December 2021 to February ...
Joanna Potapowicz, Krystyna Kozioł, Joanna Plenzler, Robert Józef Bialik, Justyna Dudek, Marcin Frankowski, Anetta Zioła‐Frankowska, Sara Lehmann‐Konera, Żaneta Polkowska   +8 more
wiley   +1 more source

Morphology and dynamics of inflated subaqueous basaltic lava flows [PDF]

, 2014
International audienceDuring eruptions onto low slopes, basaltic Pahoehoe lava can form thin lobes that progressively coalesce and inflate to many times their original thickness, due to a steady injection of magma beneath brittle and viscoelastic layers ...
Anne Deschamps, Appelgate, Bondre, Brigitte Van Vliet-Lanoe, Calzia, Carbotte, Cashman, Cashman, Chadwick, Chadwick, Chitwood, Chitwood, Clauser, Cormier, Crisp, Cécile Grigné, Deschamps, Dragoni, Dugas, Duraiswami, Einarsson, Einarsson, Einarsson, Ely, Fink, Fornari, France Floc'h, Garel, Greeley, Greeley, Gregg, Gregg, Griffiths, Griffiths, Guilbaud, Harris, Hart, Hart, Head, Helo, Hoblitt, Holcomb, Hon, Hon, Hooper, Hooper, Horai, Howard, Hughes, James, Jensen, Jones, Jones, Kahle, Kauahikaua, Keith, Kent, Keszthelyi, Keszthelyi, Kreith, Kuntz, Kuntz, Leeman, Lenat, Lyle, Macdonald, Mattsson, McClinton, Morgane Le Saout, Morris, Orem, Otto, Pascal Allemand, Patrick, Pearson, Peterson, Rossi, Rowland, Russell, Ryan, Saemundsson, Sakimoto, Salisbury, Samuel Adam Soule, Scheirer, Schmincke, Self, Self, Self, Self, Sherrod, Sigmarsson, Steingrímsson, Sutherland, Swanson, Tepley, Thorarinsson, Thordarson, Thordarson, Thordarson, Thordarson, Thordarson, Tolan, Turcotte, Walker, Walker, Walker, Wang, Wantim, Wood, Wright, Ólafsson   +111 more
core   +3 more sources