Results 31 to 40 of about 18,008 (115)

Controlled-source electromagnetic and seismic delineation of sub-seafloor fluid flow structures in a gas hydrate province, offshore Norway [PDF]

, 2016
Deep sea pockmarks underlain by chimney-like or pipe structures that contain methane hydrate are abundant along the Norwegian continental margin. In such hydrate provinces the interaction between hydrate formation and fluid flow has significance for ...
Attias, Eric, Berndt, Christian, Best, Angus I., Hölz, Sebastian, Jegen-Kulcsar, Marion, Minshull, Tim A., Sinha, Martin, Weitemeyer, Karen   +7 more
core   +2 more sources

Workshop on Magmatic Processes of Early Planetary Crusts: Magma Oceans and Stratiform Layered Intrusions [PDF]

The significance of the lunar highland pristine cumulate samples were reevaluated with the aid of the additional insights provided by geologically constrained terrestrial investigations.
Mccallum, I. S., Walker, D.
core   +1 more source

An investigation of a super-Earth exoplanet with a greenhouse-gas atmosphere using a general circulation model

, 2012
We use the Massachusetts Institute of Technology general circulation model (GCM) dynamical core, in conjunction with a Newtonian relaxation scheme that relaxes to a gray, analytical solution of the radiative transfer equation, to simulate a tidally ...
Madhusudhan, Nikku, Michaels, Timothy I., Zalucha, Angela M.   +2 more
core   +1 more source

Depth Determination of the 2010 El Mayor‐Cucapah Earthquake Sequence (M≥4.0) [PDF]

, 2019
The 2010 M_W 7.2 El Mayor‐Cucapah earthquake ruptured a zone of ~120 km in length in northern Baja California. The geographic distribution of this earthquake sequence was well constrained by waveform relocation.
Cochran, Elizabeth S., Hauksson, Egill, Helmberger, Donald V., Yu, Chunquan, Zhan, Zhongwen   +4 more
core   +1 more source

On mapping seafloor mineral deposits with central loop transient electromagnetics [PDF]

, 2012
Electromagnetic methods are commonly employed in exploration for land-based mineral deposits. A suite of airborne, land, and borehole electromagnetic techniques consisting of different coil and dipole configurations have been developed over the last few ...
Abramowitz M., Andrei Swidinsky, Cairns G., Chave A., Edwards R., Grant F., Hartmann M., Kaufman A., Liu C., Marion Jegen, Robb L., Sebastian Hölz, Ward S., Weidelt P.   +13 more
core   +1 more source

An absorbing boundary formulation for the stratified, linearized, ideal MHD equations based on an unsplit, convolutional perfectly matched layer

, 2010
Perfectly matched layers are a very efficient and accurate way to absorb waves in media. We present a stable convolutional unsplit perfectly matched formulation designed for the linearized stratified Euler equations.
Appelö, Bogdan, Bogdan, Bécache, Bérenger, Bérenger, Cameron, Cameron, Christensen-Dalsgaard, Collino, Collino, Colonius, D. Komatitsch, Drossaert, Festa, Gedney, Gizon, Gizon, Gizon, Hanasoge, Hanasoge, Hanasoge, Hanasoge, Hu, Hu, Hu, Khomenko, Komatitsch, L. Gizon, Lele, Leroy, Martin, Martin, Meza-Fajardo, Moradi, Parchevsky, Roden, S. M. Hanasoge, Shelyag, Stein, Thompson, Tóth, Winton   +42 more
core   +3 more sources

Ancient Aqueous Environments at Endeavour Crater, Mars [PDF]

, 2014
Opportunity has investigated in detail rocks on the rim of the Noachian age Endeavour Crater, where orbital spectral reflectance signatures indicate the presence of Fe⁺³-rich smectites.
Arvidson, R. E., Bell, J. F., III, Catalano, J. G., Clark, B. C., Crumpler, L. S., de Souza, P. A., Jr., Fairén, A. G., Farrand, W. H., Fox, V. K., Gellert, R., Ghosh, A., Golombek, M. P., Grotzinger, J. P., Guinness, E. A., Herkenhoff, K. E., Jolliff, B. L., Knoll, A. H., Li, R., McLennan, S. M., Ming, D. W., Mittlefehldt, D. W., Moore, J. M., Morris, R. V., Murchie, S. L., Parker, T. J., Paulsen, G., Rice, J. W., Ruff, S. W., Smith, M. D., Squyres, S. W., Wolff, M. J.   +30 more
core   +2 more sources

Mariner Mars 1969: Atmospheric results [PDF]

, 1971
Results of investigation of probable atmospheric effects appearing in Mariner '69 TV pictures that have undergone noise removal and preliminary decalibration are described.
Leighton, Robert B., Leovy­, Conway B., Smith, Bradford A., Young, Andrew T.   +3 more
core   +1 more source

Delivery of Dark Material to Vesta via Carbonaceous Chondritic Impacts

, 2012
NASA's Dawn spacecraft observations of asteroid (4) Vesta reveal a surface with the highest albedo and color variation of any asteroid we have observed so far. Terrains rich in low albedo dark material (DM) have been identified using Dawn Framing Camera (
Adams, Andreas Nathues, Andrew W. Beck, Beck, Binzel, Binzel, Bogard, Bottke, Bottke, Buchanan, Buchanan, Christopher T. Russell, Cloutis, Cloutis, Daniel D. Durda, David Blewett, David Mittlefehldt, David Nesvorny, David P. O’Brien, Debra Buczkowski, Desnoyers, Edward A. Cloutis, Elizabeth M. Palmer, Gaffey, Gaffey, Gomes, Gounelle, Grady, Harry Y. McSween, Hasegawa, Hiroi, Holger Sierks, Holsapple, Jaumann, Jean-Philippe Combe, Jennifer E.C. Scully, Jian-Yang Li, Jutzi, Keil, Kris J. Becker, Le Corre, Levison, Love, Love, Lucille Le Corre, Mayne, Megha U. Bhatt, Melosh, Michael J. Gaffey, Mittlefehldt, Nesvorny, Nesvorny´, O’Brien, Paul J. Mann, Reddy, Reddy, Rivkin, Robert Gaskell, Rubin, Sierks, Svetsov, Taylor, Thomas, Thomas B. McCord, Tsiganis, Vishnu Reddy, Wasson, William F. Bottke, Wilson, Wilson, Wilson, Zolensky   +71 more
core   +1 more source

MECA Symposium on Mars: Evolution of its Climate and Atmosphere [PDF]

The geological, atmospheric, and climatic history of Mars is explored in reviews and reports of recent observational and interpretive investigations. Topics addressed include evidence for a warm wet climate on early Mars, volatiles on Earth and on Mars,
Baker, Victor, Carr, Michael, Fanale, Fraser, Greeley, Ronald, Haberle, Robert, Leovy, Conway, Maxwell, Ted   +6 more
core   +1 more source