Showing 141 - 156 results of 156 for search '"volcano"', query time: 0.04s Refine Results
  1. 141

    Thermal state of permafrost in the high mountains of Mexico by Kenji Yoshikawa, Victor Soto, Guillermo Ontiveros-Gonzales, Samael Oliver Vagamontes, Hugo Delgado Granados, Lorenzo Vazquez-Selem, David Palacios

    Published 2024-12-01
    “…Ice-rich permafrost is observed near the summits of Citlaltépetl (Pico de Orizaba) and Iztaccíhuatl volcanoes. The lower limit of mountain permafrost is about 5,200 to 5,300 m.a.s.l. much higher than originally thought. …”
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  2. 142

    RESILIENCE OF ADOLESCENT POST-DISASTER ERUPTION OF MOUNT SEMERU: LITERATURE REVIEW by Primasari Mahardhika Rahmawati, Suhari Suhari, Anggia Astuti, Musviro Musviro

    Published 2021-10-01
    “…Introduction : Indonesia sits on an active continental plate, surrounded by a series of very active volcanoes called the ring of fire. These conditions make Indonesia very vulnerable to disasters. …”
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  3. 143

    Seismic Diffraction Analysis of a Fluid Escape Pipe beneath the Submarine Gas Bubble Plume in the Haima Cold Seep Area by Bin Liu, Li Yang, Jiangxin Chen, Leonardo Azevedo, Tonggang Han

    Published 2021-01-01
    “…Briefly, we propose that gas pockets within the pipe structure could be analogue to the magma chambers located beneath volcanoes and this may provide a new insight into how gases migrate through the pipe structure and reach the seafloor.…”
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  4. 144

    Time series analysis of radiant heat using 75 hours VIIRS satellite day and night band nightfire data by Jyoti U. Devkota

    Published 2020-12-01
    “…These are emitted by various sources such as gas flares, biomass burning, volcanoes, and industrial sites such as steel mills. …”
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  5. 145

    Low-Cost Solution for Assessment of Urban Flash Flood Impacts Using Sentinel-2 Satellite Images and Fuzzy Analytic Hierarchy Process: A Case Study of Ras Ghareb City, Egypt by Mohammed Sadek, Xuxiang Li

    Published 2019-01-01
    “…Natural hazards are indeed counted as the most critical challenges facing our world, represented in floods, earthquakes, volcanoes, hurricanes, and forest fires. Among these natural hazards, the flash flood is regarded the most frequent. …”
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  6. 146

    Mt. Etna Tilt Signals Associated with February 6, 2023, M=7.8 and M=7.5 Turkey Earthquakes by Laura Privitera, Ferruccio Ferrari, Angelo Ferro, Salvatore Gambino

    Published 2023-01-01
    “…By using these signals, we evidence the different behaviors of two of the most used models of tiltmeters on volcanoes (Lily and Pinnacle) and how they are useful for instrument calibration.…”
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  7. 147

    Bamboo Growing and Poverty Reduction in Musanze and Burera Districts, Rwanda. by Eric, Hitimana

    Published 2020
    “…This study set out to assess the contribution of bamboo growing towards poverty reduction in two districts of northern Rwanda where the Volcanoes National Park is found. The major objective of the study was to establish whether bamboo growing was helping the communities to reduce poverty among them. …”
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  8. 148

    Electrical conductivity in the mantle transition zone beneath eastern Central Asian Orogenic Belt revealed by geomagnetic signals by Yanhui Zhang, Yujia Hu, Mina Ma, Yuyan Zhang

    Published 2025-01-01
    “…However, there is still considerable controversy over the formation mechanisms and material sources of these volcanoes. The mantle transition zone (MTZ), as a necessary channel for the upward and downward movement of mantle material and energy exchange may provide crucial constraints on the dynamic mechanisms of volcanic activity. …”
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  9. 149
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  11. 151

    Curvature Determination Method for Diverging Acoustic Lens of Underwater Acoustic Transducer by Minze Li, Mingzhen Xin, Fanlin Yang, Yu Luo, Jinpeng Liu, Niuniu Wu

    Published 2025-01-01
    “…Underwater acoustic transducers need to expand the coverage of acoustic signals as much as possible in most ocean explorations, and the directivity indicators of transducers are difficult to change after the device is packaged, which makes the emergence angle of the underwater acoustic transducer limited in special operating environments, such as polar regions, submarine volcanoes, and cold springs. Taking advantage of the refractive characteristics of sound waves propagating in different media, the directivity indicators can be controlled by installing an acoustic lens outside the underwater acoustic transducer. …”
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  12. 152
  13. 153

    Gas Hydrate Accumulation and Occurrence Associated with Cold Seep Systems in the Northern South China Sea: An Overview by Wei Zhang, Jinqiang Liang, Qianyong Liang, Jiangong Wei, Zhifeng Wan, Junxi Feng, Wei Huang, Jing Zhao, Miaomiao Meng, Wei Deng, Chongmin Chen

    Published 2021-01-01
    “…Active cold seep systems with a large amount of gas leakage, gas plumes, and microbial communities and inactive cold seep systems with authigenic carbonate pavements are related to the variable intensity of the gas-bearing fluid, which is usually derived from the deep strata through mud diapirs, mud volcanoes, gas chimneys, and faults. Gas hydrates are usually precipitated in cold seep vents and deeper vertical fluid migration pathways, indicating that deep gas-bearing fluid activities control the formation and accumulation of gas hydrates. …”
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  14. 154

    “Panoramas magníficos”. La geografía en tres revistas guatemaltecas, 1894-1898 by Rodrigo Antonio Vega y Ortega Báez

    Published 2024-08-01
    “…The hemerographic source is made up of fifteen writings divided into the following topics: the border with Mexico, local views, volcanoes and the advance of the railroad. The research methodology takes up the social studies of science that make it possible to relate the history of geography with the interest of editors, authors and readers for this science. …”
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  15. 155

    A Geophysical Review of the Seabed Methane Seepage Features and Their Relationship with Gas Hydrate Systems by Jinxiu Yang, Mingyue Lu, Zhiguang Yao, Min Wang, Shuangfang Lu, Ning Qi, Ying Xia

    Published 2021-01-01
    “…Results show that seabed methane seepage sites are often manifested as methane flares, pockmarks, deep-water corals, authigenic carbonates, and gas hydrate pingoes at the seabed, most of which are closely related to vertical fluid migration structures like faults, gas chimneys, mud volcanoes, and unconformity surfaces or are located in the landward limit of gas hydrate stability zone (LLGHSZ) where hydrate dissociation may have released a great volume of methane. …”
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  16. 156

    Influence of volatiles (H$_{2}$O and CO$_{2}$) on shoshonite phase equilibria by Vetere, Francesco, Namur, Olivier, Holtz, Francois, Almeev, Renat, Donato, Paola, Frondini, Francesco, Cassetta, Michele, Pisello, Alessandro, Perugini, Diego

    Published 2023-07-01
    “…This result has important consequences upon the physical properties of the magma because it influences its viscosity and, as a consequence, velocity during its travel to the Earth surface.Assuming that the widths of Vulcanello conduits vary from 0.5 to 1.5 m, estimates of the ascent velocity vary in the range 1.5 ${\times }$ 10$^{-4}$–3.5 ${\times }$ 10$^{-2}$ m${\cdot }$s$^{-1}$ for CO$_{2}$ free systems and from 5.7 ${\times }$ 10$^{-4}$–1.3 ${\times }$ 10$^{-1}$ m${\cdot }$s$^{-1}$ for CO$_{2}$ bearing systems.Since shoshonitic magmas are common not only in the Italian volcanic provinces (Aeolian Arc, Campi Flegrei, Ischia Island, Pontine Islands, Monti Cimini, Monte Amiata, Capraia Island, Radicofani, Roccamonfina) but also in different volcanoes worldwide (Yellowstone, Mariana Arc, Kurile Arc, Tonga Arc, Andean Arc, Kamchatka Arc), we suggest that the new data will be useful to better understand shoshonitic magma behaviour under relevant geological scenarios. …”
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