... Centre Is Toraiwa, and the Cliff of Dainaiin Crater Is Visible. This Photograph Was Taken by the ...
0000 - Gale Group | NCCO Photography
E. B. Bierhaus, F. M. Rossmann, C. L. Johnson, R. T. Daly, D. R. Golish, J. O. Nolau, A. J. Allen, H. Campins, M. Pajola, B. Rizk, C. Drouet d’Aubigny, D. N. DellaGiustina, E. A. Cloutis, D. Trang, D. S. Lauretta,
We use observations of Bennu's impact craters, and measurements of particle sizes seen in images from the OSIRIS-REx (the Origins, Spectral Interpretation, Resource Identification Regolith Explorer sample-return mission) ... in particle measurements from areas inside and around craters, roughness assessments of crater interiors vs. surrounding terrain, crater colors, crater depth-to-diameter (d/D) ratios, and the global crater size-frequency distribution. All data sets show a transition in behavior at crater diameters between 20 m and 40 m, with ...
Tópico(s): Isotope Analysis in Ecology
2023 - Elsevier BV | Icarus
... Edge on the Far Right, Pointing into the Crater While Holding onto a Sash (?), Holding on to ...
0000 - Gale Group | NCCO Photography
Dong Chen, Fan Hu, P. Takis Mathiopoulos, Zhenxin Zhang, Jiju Peethambaran,
Crater recognition on Mars is of paramount importance for many space science applications, such as accurate planetary ... novel CNN, referred to as MC-UNet (Martian Crater U-Net), wherein classical U-Net is employed as the backbone for accurate identification of Martian craters at semantic and instance levels from thermal-emission- ... while maintaining a high recognition rate of impact craters on Mars. For enhancing the operation of MC- ... same network depth so that large-sized Martian craters can be more accurately recognized. The proposed MC- ...
Tópico(s): Space Satellite Systems and Control
2023 - Multidisciplinary Digital Publishing Institute | Remote Sensing
... Different Sizes. The Deep, Sharp Ravine of Dainaiin Crater, the Larger of the Two, Is Visible in ...
0000 - Gale Group | NCCO Photography
Erik Duncan, Sergii Skakun, Ankit Kariryaa, Alexander V. Prishchepov,
... object attributes at the scale of individual impacts (craters) of heavy weapon shelling. Manual identification and delineation of artillery craters in satellite imagery is time and resource consuming, ... deep learning approach for identifying and mapping artillery craters in agricultural fields in Eastern Ukraine during the ... m spatial resolution. The model can detect artillery craters with producer's accuracy (PA) (or recall) of ... or precision) of 0.392 in terms of crater area and shape, and PA of 0.559 ...
Tópico(s): Environmental Sustainability and Technology
2023 - Elsevier BV | Science of Remote Sensing
... Protruding from a Slope, Not Part of the Crater of the Currently Active Nakadake. The English Caption ... Hell). Steam, Not Smoke, Is Gushing from the Crater. Monochrome. width 155 mm x height 82 mm. ...
0000 - Gale Group | NCCO Photography
Shuowei Zhang, Peng Zhang, Juntao Yang, Zhizhong Kang, Zhen Cao, Ze Yang,
The impact crater is the most dominant geomorphic structural units over the planetary surface and its accurate extraction is of great ... system and the space environment. Through the impact crater's identification, especially small-scale, and their spatial ... the impact flux, morphological characteristics, age of impact craters and surface degradation can be revealed. Therefore, this paper presents an automatic method for the impact crater detection, especially small-scale ones, using anchor-free ... object proposals for detecting different types of impact craters, we retrain the anchor-free CenterNet model using ...
Tópico(s): Space Science and Extraterrestrial Life
2023 - Elsevier BV | Advances in Space Research
... Photograph Captures the Asodani Area with the Central Crater Located on the North Side of Aso Gogaku ( ...
0000 - Gale Group | NCCO Photography
Qinghai Sun, Wenzhe Fa, Meng‐Hua Zhu, Jun Du,
The morphology of impact craters on the Moon plays an important role in understanding impact cratering process, surface and subsurface properties, and their evolutions. In ... slope, and rock abundance of 15,135 impact craters between 5 and 20 km in diameter on ... covering the simple and simple-to-complex transitional crater regimes. We found that the decline rates of inner average slopes of mare craters are generally larger than those of non-maria craters and that the degradation rate of inner upper ... we found that there is no difference in crater rim height between different terrains (e.g., maria ...
Tópico(s): Spaceflight effects on biology
2023 - Elsevier BV | Icarus
... the Mouth of Mt. Kamayama (2568M), the Central Crater. Official Record Keeping of Mt. Asama Eruptions Started ...
0000 - Gale Group | NCCO Photography
Yier Zhou, Xiaolu Li, Baocheng Hua,
Crater identification is an important task of environment perception, which is benefit for path planning and safe ... obtained by LiDAR, a three-dimensional data-based crater identification method is proposed to complete the crater by filling in the blind zone for high ... respectively. To obtain a reasonable identification of the craters under various terrain conditions, three parameters related to ... sensor are varied for evaluating the consequence of crater identification: the terrain frequency, the ranging errors and ...
Tópico(s): Robotic Path Planning Algorithms
2023 - Elsevier BV | Measurement
... same year in New York under title: The crater, or, Vulcan's peak. cf. Johnson, Merle. American ...
0000 - Gale Group | Sabin 2013 02
Zhaoxiang Zhang, Yuelei Xu, Jianing Song, Qing Zhou, Jarhinbek Rasol, Linhua Ma,
The detection and localization of craters on the Moon and other planets play an essential role in planet landing, spacecraft navigation, and geologic study. Historically, craters detection involves manually measuring the size and placement of craters in surface images. In this paper, we propose an automated pipeline named CraterNet to detect craters on the Moon and Mercury from DEM images. ... model is trained and tested to detect the craters in a supervised manner. To address the domain ... then developed to improve the effectiveness the unsupervised crater detection. The DeepMoon crater dataset and the unsupervised ...
Tópico(s): Maritime and Coastal Archaeology
2023 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Aerospace and Electronic Systems
Work of fiction. Book.
0000 - Gale Group | Sabin
T. Heyer, Wajiha Iqbal, A. Oetting, H. Hiesinger, C. H. van der Bogert, N. Schmedemann,
Impact crater size-frequency measurements are key to date and investigate surface processes on terrestrial planetary bodies. Using high- ... of numerous space missions, various regional and global crater datasets of the Moon and other planetary bodies ... techniques are increasingly being used to automatically detect craters and to create extensive crater catalogs. Accurate map projection-independent measurement of crater sizes is essential for an accurate dating of ... a map projection-independent measurement and comparison of craters. Results can be visualized within the tool or ...
Tópico(s): Space Science and Extraterrestrial Life
2023 - Elsevier BV | Planetary and Space Science
Pilgrims at the Top of Mt. Fuji. There Are Two Craters at the Summit (One Large, One Small), and the Caldera Surrounds Them. Pilgrims Came to Pray at the ...
0000 - Gale Group | NCCO Photography
C. I. Fassett, R. A. Beyer, A. N. Deutsch, Masatoshi Hirabayashi, CJ Leight, P. Mahanti, Cole Nypaver, Bradley J. Thomson, David A. Minton,
Abstract Crater degradation and erosion control the lifetime of craters in the meter‐to‐kilometer diameter range on the lunar surface. A consequence of this crater degradation process is that meter‐scale craters survive for a comparatively short time on the lunar surface in geologic terms. Here, we derive crater lifetimes for craters of <∼200 m in diameter by analyzing existing functional expressions for crater population equilibrium and production. These lifetimes allow us ... degradation needed at different scales to explain when craters become undetectable on equilibrium surfaces. We show how ...
Tópico(s): Geology and Paleoclimatology Research
2022 - Wiley | Journal of Geophysical Research Planets
Publisher's advertising: [3] p., 2nd count. Book.
0000 - Gale Group | Sabin
Yang-Yu He, Zhaohui Zhang, S. Yang, Hongke Wang, Xingwang Cheng, Luojing Liu, Xiaotong Jia,
• In this paper, the microstructure changes of craters of TC4 target at three impact velocities are studied in detail. Three types of twins formed in the craters are analyzed, two types of dynamic recrystallization in the craters are distinguished, and three different adiabatic shear bands in the craters are observed and classified. The difference of crater damage mechanism between high velocity and hypervelocity impact ... the impact velocity increases, the volume of the crater increases, and the shape of the crater gradually ...
Tópico(s): High-pressure geophysics and materials
2022 - Elsevier BV | International Journal of Impact Engineering
Book.
0000 - Gale Group | Sabin
... angles, but the effect of impact angle on crater size is not well understood, especially for large craters. To improve oblique impact crater scaling, we present a suite of simulations of complex crater formation on Earth and the Moon over a ... angles, velocities and impactor sizes. We show that crater diameter is larger than predicted by existing scaling ... than 45$^{\circ}$ shows little dependence on obliquity. Crater depth, volume and diameter depend on impact angle in different ways such that relatively shallower craters are formed by more oblique impacts. Our simulation ...
Tópico(s): Geology and Paleoclimatology Research
2022 - American Geophysical Union | Geophysical Research Letters
Work of fiction. Book.
0000 - Gale Group | Sabin
Kejia Zhuang, Ming Li, Fengtian Lin, Cheng Hu, Jian Weng, Zhongmei Gao, Chaoqun Wu,
... to predict accurately the wear of ceramic tools. Crater wear is one of the most significant tool ... to demonstrate the forming and influence mechanisms of crater wear in Ti6Al4V turning with ceramic inserts while ... is made to describe quantitatively the appearance of crater wear from the perspective of temperature distribution based on crater wear experiments under various cutting conditions. In order ... in this paper. Then, a prediction model for crater wear depth and width considering the influence of ...
Tópico(s): Advanced Machining and Optimization Techniques
2022 - Springer Science+Business Media | The International Journal of Advanced Manufacturing Technology