Results 191 to 200 of about 52,673 (276)

A geophysical investigation of the Roter Kamm impact crater, Namibia

Meteoritics &Planetary Science, EarlyView.
Abstract The Roter Kamm impact crater is located in the southern Namib Desert. The crater has a diameter of 2.5 km and belongs to the category of simple, bowl‐shaped impact craters, with an elevated rim of fractured target rock. The crater's interior is completely buried beneath sediments, preventing extensive surface investigations of the bedrock ...
Hannah Nienhaus, Pritam Yogeshwar, Wiebke Mörbe, Bülent Tezkan, Yajun Liu, Bufelo Lushetile, Martin Melles   +6 more
wiley   +1 more source

A Proposal for a Solar Position Sensor System with Multifiber Optical Cable. [PDF]

Sensors (Basel)
Oliveira F, Cruz G, Barbosa M, Junior F, Lima R, Gómez-Malagón L.   +5 more
europepmc   +1 more source

Apatite in Bennu samples indicates multiple stages of aqueous alteration

Meteoritics &Planetary Science, EarlyView.
Abstract Calcium phosphates are ubiquitous in planetary materials, including samples returned from asteroid Bennu by the OSIRIS‐REx mission. We characterized apatite [Ca5(PO4)3(F,Cl,OH)] grains in Bennu samples by scanning electron microscopy, electron microprobe analysis, and transmission electron microscopy to investigate their compositions, mineral ...
Laura B. Seifert, T. M. Erickson, L. P. Keller, J. J. Barnes, K. Thomas‐Keprta, L. Le, J. Gorce, Z. Rahman, T. J. Zega, H. C. Connolly Jr, D. S. Lauretta   +10 more
wiley   +1 more source

Measuring location and properties of very high frequency sources emitted from an aircraft flying through high clouds. [PDF]

Nat Commun
Scholten O, Lourens M, Buitink S, Cummer S, Dwyer J, Hare BM, Huege T, Liu N, Mulrey K, Nelles A, Sterpka C, Trinh TNG, Turekova P, Ter Veen S.   +13 more
europepmc   +1 more source

Field Guide to Astronomical Instrumentation [PDF]

, 2015
Bernhard R. Brandl, Ramón Navarro, Christoph U. Keller   +2 more
openaire   +1 more source

Static recrystallization of shocked calcite in Ries impact breccias

Meteoritics &Planetary Science, EarlyView.
Abstract Calcite is prone to chemical and microstructural modifications, especially after having been strained at high stresses and strain rates, as during hypervelocity impact events. These modifications include precipitation from pore fluid as well as replacement of strained volumes by recrystallization. In calcite aggregates of a metagranite breccia
Claudia A. Trepmann, Fabian Dellefant, Lina Seybold, Wolfgang W. Schmahl, Elena Sturm, Daniel Weidendorfer, Sandro Jahn, Iuliia V. Sleptsova, Stuart A. Gilder   +8 more
wiley   +1 more source

Single-photon dual-comb ghost imaging spectroscopy. [PDF]

Nat Commun
Peng D, Mei L, Gong Z, Zuo Z, Liu Z, Di Y, Liu X, Gu C, Li W, Yan G.   +9 more
europepmc   +1 more source

Geochemical and petrographic re‐evaluation of ungrouped iron meteorites from Western Australia

Meteoritics &Planetary Science, EarlyView.
Abstract Under the current classification scheme, ungrouped irons make up ~11% of all recognized iron meteorites. A further ~7% of iron meteorites are currently classified as simply “irons” and are yet to be fully classified. To potentially classify these meteorites, newer approaches, including either statistical modeling or advanced geochemical ...
Ashley Rogers, Lucy Forman, Kai Rankenburg, Rachel Kirby, Martin Danišík, Victoria Cousins, Gretchen K. Benedix   +6 more
wiley   +1 more source

Science development study for the Atacama Large Aperture Submillimeter Telescope (AtLAST): Solar and stellar observations. [PDF]

Open Res Eur
Wedemeyer S, Barta M, Brajša R, Chai Y, Costa J, Gary D, Gimenez de Castro G, Gunar S, Fleishman G, Hales A, Hudson H, Kirkaune M, Mohan A, Motorina G, Pellizzoni A, Saberi M, Selhorst CL, Simoes PJA, Shimojo M, Skokić I, Sudar D, Menezes F, White SM, Booth M, Klaassen P, Cicone C, Mroczkowski T, Cordiner MA, Di Mascolo L, Johnstone D, van Kampen E, Lee M, Liu D, Maccarone T, Orlowski-Scherer J, Saintonge A, Smith M, Thelen AE.   +37 more
europepmc   +1 more source

Shock metamorphic effects in Itokawa phosphates: A comparison with megaregolith‐derived meteorites

Meteoritics &Planetary Science, EarlyView.
Abstract Returned regolith samples from the asteroid Itokawa provide a unique opportunity to compare shock metamorphic effects in unconsolidated regolith materials with those preserved in lithified meteorites, that is, megaregolith. We analyzed four Itokawa particles (Ueda—RA‐QD02‐0519, Narahara—RA‐QD02‐0573, Domon—RA‐QD02‐0588, Ishiuchi—RX‐MD03‐0212 ...
E. Dobrică, A. N. Krot, A. J. Brearley
wiley   +1 more source