Results 61 to 70 of about 125,890 (374)
Real-time GeoAI for High-resolution Mapping and Segmentation of Arctic Permafrost Features [PDF]
arXiv, 2023 This paper introduces a real-time GeoAI workflow for large-scale image analysis and the segmentation of Arctic permafrost features at a fine-granularity. Very high-resolution (0.5m) commercial imagery is used in this analysis. To achieve real-time prediction, our workflow employs a lightweight, deep learning-based instance segmentation model ...
arxiv
Cold, dry, windy, and UV irradiated -- surveying Mars relevant conditions in Ojos del Salado Volcano (Andes Mountains, Chile) [PDF]
, 2020 The Special Collection of papers in this issue of Astrobiology provide an overview of the characteristics and potential for future exploration of the Ojos del Salado volcano, located in the Andes Mountains in front of the Atacama Desert in northern Chile.
arxiv +1 more source
Degrading permafrost puts Arctic infrastructure at risk by mid-century
Nature Communications, 2018 Degradation of near-surface permafrost can pose a serious threat to the utilization of natural resources, and to the sustainable development of Arctic communities. Here we identify at unprecedentedly high spatial resolution infrastructure hazard areas in
J. Hjort +7 more
semanticscholar +1 more source
Rock glaciers in the Ulakhan-Chistay ridge (axial part of the Chersky mountain range)
Лëд и снег, 2019 The Ulakhan-Chistay Ridge is interesting by the fact that one of the most extensive mountain glaciations in northeast Russia is located here. In addition, there are widespread specific glacial-cryogenic formations – stone glaciers related to glacial and
V. M. Lytkin +2 more
doaj +1 more source
Case Studies in Construction Materials, 2023 Freeze-thaw weathering can fragment sand and gravel materials, altering their mechanical properties. This study aims to simulate the effects of freeze-thaw weathering by subjecting sand and gravel materials to cycling tests.
Qi Liu +7 more
doaj
The Anatomical Record, EarlyView.Abstract Megantereon was a widespread saber‐toothed felid from the Pliocene and Pleistocene of the Old World and North America, but its rarity in the fossil record makes it complicated to restore its life appearance. Lack of complete specimens makes it necessary to combine information from fossils of different individuals to reconstruct their facial ...
Mauricio Antón +4 more
wiley +1 more source
Influence of Rainfall Changes on the Temperature Regime of Permafrost in Central Yakutia
Land, 2021 Climate change effects, such as melting of glaciers and sea ice in response to rising temperatures, may lead to an increase in global water availability and thus in precipitation.
Aleksandr Zhirkov +3 more
doaj +1 more source
Permafrost Hydrology of the Qinghai-Tibet Plateau: A Review of Processes and Modeling
Frontiers in Earth Science, 2021 Permafrost extends 40% of the Qinghai-Tibet Plateau (QTP), a region which contains the headwaters of numerous major rivers in Asia. As an aquiclude, permafrost substantially controls surface runoff and its hydraulic connection with groundwater.
Hongkai Gao +5 more
semanticscholar +1 more source
The Depositional Record, EarlyView.A new classification for inland freshwater palaeowetlands to be used in the field or core laboratory by sedimentologists, providing examples from the Guadix Basin (southern Spain). Abstract Present wetlands have proven to be delicate, biodiverse ecosystems, that are natural sinks for CO2 and act as good indicators for climate changes.
S. Pla‐Pueyo +1 more
wiley +1 more source
Evaluating permafrost definitions for global permafrost area estimates in CMIP6 climate models
Environmental Research Letters, 2023 Global permafrost regions are undergoing significant changes due to global warming, whose assessments often rely on permafrost extent estimates derived from climate model simulations.
Norman J Steinert +4 more
doaj +1 more source