Results 71 to 80 of about 14,263 (225)

Development of Knife-Edge Ridges on Ion-Bombarded Surfaces

, 2012
We demonstrate in both laboratory and numerical experiments that ion bombardment of a modestly sloped surface can create knife-edge like ridges with extremely high slopes.
Aziz, Michael J., Bertozzi, Andrea L., Brenner, Michael P., Holmes-Cerfon, Miranda, Zhou, Wei   +4 more
core   +1 more source

Confirmation of the impact origin of the Late Ordovician Tvären impact structure (southeast Sweden) and emplacement of impactites in a marine setting

Meteoritics &Planetary Science, EarlyView.
Abstract The Tvären structure in southeastern Sweden has been listed as a confirmed marine‐target impact structure for decades. However, to date, no measurements and/or indexed data of planar deformation features in quartz grains from the structure have been published or any other unequivocal evidence of impact.
Katarzyna J. Gajewska, Sanna Alwmark, Mikael Calner, Sylvain Richoz, Jens Ormö, Erik Sturkell, Carl Alwmark   +6 more
wiley   +1 more source

The 1723 AD violent Strombolian and phreatomagatic eruption at Irazu volcano (Costa Rica) [PDF]

, 2013
The largest of the recorded historic eruptions at Irazú volcano began on February 16, 1723 and lasted until at least December 11. We here critically examine deposits of this eruption exposed on the summit of Irazú. Our reconstruction of the eruption is
Alvarado, G. E., Schmincke, Hans-Ulrich
core  

The micrometeoroid complex and evolution of the lunar regolith [PDF]

The interaction of the micrometeoroid complex with the lunar surface is evidenced by numerous glass-lined microcraters on virtually every lunar surface exposed to space.
Brownlee, D. E., Gault, D. E., Hartung, J. B., Hoerz, F., Morrison, D. A., Oberbeck, V. R., Quaide, W. L., Vedder, J. F.   +7 more
core   +1 more source

Cratering in glasses impacted by debris or micrometeorites [PDF]

Mechanical strength measurements on five glasses and one glass-ceramic exposed on LDEF revealed no damage exceeding experimental limits of error. The measurement technique subjected less than 5 percent of the sample surface area to stresses above 90 ...
Kinser, Donald L., Wiedlocher, David E.
core   +1 more source

A Bioethical Assessment of the Environmental Impacts of War

Bioethics, EarlyView.
Funda Gülay Kadioglu
wiley   +1 more source

Superimposed Sacrificial Texturing to Enhance the Optical Performance in Thin‐Film Solar Cells

Progress in Photovoltaics: Research and Applications, Volume 34, Issue 4, Page 465-481, April 2026.
Sacrificial texturing method using controlled etching of undoped zinc oxide and indium‐doped tin oxide generates microscale and nanoscale textures on glass. Roughness on two different scales is superimposed to create a new texture capable of broad‐spectrum scattering, which is utilised in thin‐film silicon solar cells to enhance optical performance ...
Govind Padmakumar, Matthias Criel, Tanya Kashyap, Federica Saitta, Paula Perez‐Rodriguez, René A. C. M. M. van Swaaij, Arno H. M. Smets   +6 more
wiley   +1 more source

Sliding and Burrowing Blocks of CO2 Create Sinuous “Linear Dune Gullies” on Martian Dunes by Explosive Sublimation‐Induced Particle Transport

Geophysical Research Letters
Martian linear dune gullies are landforms consisting of parallel and often sinuous channels with distinct levees and pit‐shaped endings that occur in the mid‐latitudes on Mars.
Lonneke Roelofs, Simone R. Visschers, Susan J. Conway, Tjalling deHaas, Maarten G. Kleinhans, Sylvain Douté, Kelly Pasquon, Matthew E. Sylvest, Manish R. Patel   +8 more
doaj   +1 more source

Sinkholes, pit craters, and small calderas: Analog models of depletion-induced collapse analyzed by computed X-ray microtomography

Geological Society of America Bulletin, 2014
Volumetric depletion of a subsurface body commonly results in the collapse of overburden and the formation of enclosed topographic depressions. Such depressions are termed sinkholes in karst terrains and pit craters or collapse calderas in volcanic terrains. This paper reports the first use of computed X-ray microtomography (μCT) to image analog models
Poppe, S., Holohan, E., Pauwels, E., Cnudde, V., Kervyn, M.   +4 more
openaire   +6 more sources

Volcanic features of Hawaii. A basis for comparison with Mars [PDF]

Despite the difference in size Martian and Hawaiian volcanoes have numerous characteristics in common. Specific features such as lava channels, collapsed lava tubes, levees and flow fronts, all very common in Hawaii, are also abundant on the flanks of ...
Carr, M. H., Greeley, R.
core   +1 more source