Results 21 to 30 of about 12,699 (236)

Experimental craters formed by single and multiple buried explosions and implications for volcanic craters with emphasis on maars

Geophysical Research Letters, 2012
Craters at many volcanoes, including most maars, are formed by multiple subsurface explosions. Experiments compared the crater formed by a single large, buried explosion, with craters formed by multiple explosions with the same cumulative energy ...
Greg A. Valentine, James D. L. White, Pierre‐Simon Ross, Jamal Amin, Jacopo Taddeucci, Ingo Sonder, Peter J. Johnson   +6 more
doaj   +1 more source

The magnetosphere under weak solar wind forcing [PDF]

, 2007
The Earth's magnetosphere was very strongly disturbed during the passage of the strong shock and the following interacting ejecta on 21–25 October 2001. These disturbances included two intense storms (Dst*≈−250 and −180 nT, respectively).
Rich, F. J., S. W. H. Cowley, Jordanova, V. K., R. B. Torbert, S. W. H. Cowley (7590302), A. Sharma, Y. Miyoshi (7592057), Adrian Grocott (7590026), Farrugia, Charlie J., V. K. Jordanova (7592063), C. J. Farrugia, A. Grocott, Sharma, A., V. K. Jordanova, C. J. Farrugia (7592051), Farrugia, C. J., P. E. Sandholt (7592054), R. B. Torbert (7592066), Grocott, A., Miyoshi, Y., P. E. Sandholt, Torbert, Roy B., Sandholt, P. E., Y. Miyoshi, Cowley, S. W. H., A. Sharma (5739), F. J. Rich, Torbert, R. B., F. J. Rich (7592060)   +28 more
core   +1 more source

Light Curves and Colors of the Ejecta from Dimorphos after the DART Impact

, 2023
On 26 September 2022 the Double Asteroid Redirection Test (DART) spacecraft impacted Dimorphos, a satellite of the asteroid 65803 Didymos. Because it is a binary system, it is possible to determine how much the orbit of the satellite changed, as part of ...
Janetzke, Ron, Will, Stefan, Smith, Barton A., Dalba, Paul A., Randolph, Justus, Graykowski, Kathy, Peluso, Daniel O’Conner, Huet, Patrice, Malvache, Arnaud, Guillet, Bruno, Powell, Tyler M., Limagne, Matthieu, Transom, Ian M., Sgro, Lauren A., Loose, Margaret, Pickering, John W., Goto, Tateki, Camilleri, Michael, Esposito, Thomas M., Payet, Bruno, Huth, Patrick, Ryno, Matthew, Ishiyama, Satoshi, Kukita, Ryuichi, Lambert, Ryan A., Cazeneuve, Dorian, Graykowski, Ariel, Clarke, Colin, Rivett, Darren A., Yue, Wai-Chun, Mitchell, Mike, Peluso, Daniel O'Conner, Wasilwa, Ronald, Marfisi, Laurent, Primm, Michael, Blaclard, Guillaume, Toullec, Jean-Pierre, Shimizu, Masao, Janke, Des, Murabana, Susan, Kardel, Scott, Owen, Daniel Chu, Fukui, Keiichi, Marchis, Franck, Borot, Antonin   +44 more
core   +1 more source

Pre-encounter Predictions of DART Impact Ejecta Behavior and Observability [PDF]

, 2022
We overview various efforts within the DART Investigation Team's Ejecta Working Group to predict the characteristics, quantity, dynamical behavior, and observability of DART impact ejecta.
Fahnestock, Eugene, G, Dotto, Elisabetta, Tancredi, Gonzalo, Abell, Paul A., Li, Jian Yang, Ferrari, Fabio, Kramer, Emily, Soldini, Stefania, Ivanovski, Stavro, Kolokolova, Ludmilla, Raducan, Sabina D, Cheng, Andrew F, Schwartz, Stephen R, Fahnestock, Eugene G., Fahnestock, Eugene G, Bagatin, Adriano Campo, Michel, Patrick, Raducan, Sabina D., Schwartz, Stephen R., Chesley, Steven, Cheng, Andy F., Tancredi Machado, Gonzalo José, Abell, Paul, A, Raducan, Sabina, D, Abell, Paul A, Li, Jian-Yang, Cheng, Andrew, F, Abell, Paul, Zhang, Yun, Bagatin, Adriano, Campo, IVANOVSKI, Stavro Lambrov, Rossi, Alessandro, Cheng, Andrew F., Jian-Yang Li, Campo Bagatin, Adriano, Schwartz, Stephen, R, Yun Zhang   +36 more
core   +1 more source

Initial 40Ar‐39Ar Ages of the Paleocene‐Eocene Boundary Impact Spherules

Geophysical Research Letters, 2019
We report 40Ar‐39Ar step‐heating ages of Paleocene‐Eocene (P‐E) boundary impact spherules from Atlantic Margin coastal plain and open ocean sites. We test the hypothesis that the P‐E spherules are reworked from an earlier event (e.g., K‐Pg impact at ~66 ...
Morgan F. Schaller, Brent D. Turrin, Megan K. Fung, Miriam E. Katz, Carl C. Swisher   +4 more
doaj   +1 more source

Infrared Ejecta and Cold Dust in the Young Supernova Remnant N132D

The Astrophysical Journal, 2023
We present Spitzer, Wide-field Infrared Survey Explorer (WISE), and Herschel observations of the young supernova remnant (SNR) N132D in the Large Magellanic Cloud, including 3–40 μ m Spitzer Infrared Spectrograph (IRS) mapping, 12 μ m WISE and 70, 100 ...
Jeonghee Rho, Aravind P. Ravi, Jonathan D. Slavin, Heechan Cha   +3 more
doaj   +1 more source

Liquefaction Ejecta-Induced Damage [PDF]

, 2022
The 2010-2011 Canterbury earthquake sequence (CES) devasted Christchurch, New Zealand. Liquefied soil were ejected onto the ground surface, damaging more than 15,000 houses beyond economic repair.
Mijic, Zorana
core  

Instrument to Study Plume Surface Interactions (PSI) on the Lunar Surface: Science Motivation, Requirements, Instrument Overview, and Test Plans

Aerospace
Safe landings are imperative to accomplish NASA’s Artemis goal to enable human exploration on the Moon, including sample collection missions. However, a process known as plume surface interaction (PSI) presents a significant hazard to lunar landings. PSI
Ariana Bueno, Michael J. Krasowski, Norman Prokop, Lawrence C. Greer, Christina M. Adams, Nilton O. Rennó   +5 more
doaj   +1 more source

Geochemical and petrographic evidence for the Vredefort proximal impact ejecta in the Northern Cape, South Africa

, 2022
>Magister Scientiae - MScThe advancement of the understanding of hypervelocity impacts lies in discovering impact structures and both proximal and distal impact ejecta.
Mautle, Floyd Danger
core  

Effects of target temperature on size distribution of ejecta in hypervelocity impact : Toward revision of ISO11227

Mechanical Engineering Journal, 2016
As a preliminary study, the effects of target temperature on ejecta size were examined at an impact velocity of 3.5 km/s with the goal of improving the ISO11227.
Masahiro NISHIDA, Naoto MIYOKAWA, Fumiya KODAMA, Koichi HAYASHI, Pauline FAURE, Koichi NORIMATSU, Yusuke FUJIMURA, Yasuhiro AKAHOSHI   +7 more
doaj   +1 more source