Results 51 to 60 of about 164,975 (347)

A steeply-inclined trajectory for the Chicxulub impact

Nature Communications, 2020
The authors here present a 3D model that simulates the formation of the Chicxulub impact crater. Based on asymmetries in the subsurface structure of the Chicxulub crater, the authors diagnose impact angle and direction and suggest a steeply inclined (60°
G. S. Collins, N. Patel, T. M. Davison, A. S. P. Rae, J. V. Morgan, S. P. S. Gulick, IODP-ICDP Expedition 364 Science Party, Third-Party Scientists   +7 more
doaj   +1 more source

The missing large impact craters on Ceres [PDF]

Nature Communications, 2016
AbstractAsteroids provide fundamental clues to the formation and evolution of planetesimals. Collisional models based on the depletion of the primordial main belt of asteroids predict 10–15 craters >400 km should have formed on Ceres, the largest object between Mars and Jupiter, over the last 4.55 Gyr.
Marchi, S, Ermakov, AI, Raymond, CA, Fu, RR, O’Brien, DP, Bland, MT, Ammannito, E, De Sanctis, MC, Bowling, T, Schenk, P, Scully, JEC, Buczkowski, DL, Williams, DA, Hiesinger, H, Russell, CT   +14 more
openaire   +7 more sources

Cluster-induced crater formation

, 2008
Using molecular-dynamics simulation, we study the crater volumes induced by energetic impacts ($v= 1- 250$ km/s) of projectiles containing up to N=1000 atoms.
Aderjan, Anders, Anders, Andersen, Andersen, Bouneau, Brunelle, Brunelle, Christian Anders, Colla, Colla, Colla, Daw, Gades, Gerolf Ziegenhain, Hansen, Herbert M. Urbassek, Insepov, Michels, Salonen, Schäfer, Shapiro, Steffen Zimmermann, Upadhyay, Wilson, Yamaguchi, Ziegler, Zimmermann, Zimmermann   +28 more
core   +1 more source

Quantitative Analysis of the Sloping Terrain on Al-Biruni’s Floor and Implications for the Cratering Process

Remote Sensing
Surface unloading due to impact cratering results in lava filling the crater floor. Elevation differences in the crater floor, a common geological phenomenon on the Moon, represent direct evidence of cratering processes.
Feng Liu, Yuanxu Ma, Guanghao Ha
doaj   +1 more source

Identification of Multiscale Spatial Structure of Lunar Impact Crater: A Semivariogram Approach

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Identifying the spatial structure of lunar impact craters is necessary to increase our understanding of past geologic processes on the Moon. However, detecting multiscale spatial structures of craters in images in appropriate resolutions using optimum ...
Jiao Wang, Dongping Ming, Weiming Cheng
doaj   +1 more source

Scaling‐up RADseq methods for large datasets of non‐invasive samples: Lessons for library construction and data preprocessing

Molecular Ecology Resources, EarlyView., 2023
Abstract Genetic non‐invasive sampling (gNIS) is a critical tool for population genetics studies, supporting conservation efforts while imposing minimal impacts on wildlife. However, gNIS often presents variable levels of DNA degradation and non‐endogenous contamination, which can incur considerable processing costs. Furthermore, the use of restriction‐
Larissa S. Arantes, Jilda A. Caccavo, James K. Sullivan, Sarah Sparmann, Susan Mbedi, Oliver P. Höner, Camila J. Mazzoni   +6 more
wiley   +1 more source

Discovery of the Hailin impact crater in northeast China

Matter and Radiation at Extremes
A uniquely shaped impact structure, the Hailin impact crater, has been discovered in northeast China. The crater was formed on a granodiorite hillside and is an oval depression with asymmetric rim height and a maximum diameter of 1360 m.
Feng Yin, Ming Chen, Wenge Yang, Ho-kwang Mao   +3 more
doaj   +1 more source

Low‐Velocity Penetration Impact Behavior of Triply Periodic Minimal Surface Strut‐Based Lattices

Advanced Engineering Materials, EarlyView.
Triply periodic minimal surface (TPMS)‐based lattices are gaining attention for their multifunctional properties in applications as aeronautics and automotive, which involve low‐velocity impact loading. This work evaluates the low‐velocity penetration impact behavior of five distinct TPMS architectures.
Lucía Doyle, Javier García‐Molleja, Carlos González   +2 more
wiley   +1 more source

A NEW GLOBAL CATALOGUE OF LUNAR CRATERS (≥1 KM) WITH 3D INFORMATION AND PRELIMINARY RESULTS OF GLOBAL ANALYSIS [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Impact craters are the predominant geomorphological features on the lunar surface. They can be studied to infer the ages of the lunar surfaces, the generation processes of the geological units, and the sequences of its geological events.
Y. Wang, B. Wu
doaj   +1 more source

Ferrocene Derivatives Enable Ultrasensitive Perovskite Photodetectors with Enhanced Reverse Bias Stability

Advanced Functional Materials, EarlyView.
Novel ferrocene derivatives (e.g., FcPhc2) are used as an ultrathin layer hole‐blocking layer, reducing hole injection from the Ag contact. This results in an ultralow noise spectral density of 1.2 × 10−14 A Hz−1/2, and a high specific detectivity of 8.1 × 1012 Jones at −0.5 V.
Eunyoung Hong, William D. J. Tremlett, Lucy Hart, Beier Hu, Zhuoran Qiao, Patipan Sukpoonprom, Sarah Fearn, Edoardo Angela, Matilde Brunetta, Demosthenes C. Koutsogeorgis, Nikolaos Kalfagiannis, Davide Nodari, Martyn A. McLachlan, Piers R. F. Barnes, Artem A. Bakulin, Nicholas J. Long, Nicola Gasparini   +16 more
wiley   +1 more source