Results 1 to 10 of about 5,411,122 (304)
Insights from b value analysis of Campi Flegrei unrests [PDF]
Scientific ReportsThe Campi Flegrei caldera has experienced several episodes of volcanic unrest during the last few centuries, most notably in 1982-1984 and 2005-present. These periods of unrest are characterized by ground uplift, seismic swarms, and increased degassing.
Vincenzo Convertito +3 more
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Variability of b-value before and after the Gorkha earthquake in the Central Himalaya and Vicinity
Bibechana, 2021 This study computes the b-value of Gutenberg-Richter relation associated with the 25 April 2015 Gorkha earthquake and its aftershock sequences. For this the homogeneous catalogue of 769 earthquakes that occurred in the Himalayan compressed belt and its ...
Ram Krishna Tiwari, Harihar Paudyal
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Role of Diffusion Weighted Magnetic Resonance Imaging in Differentiating Benign From Malignant Thyroid Lesions: A Prospective Study [PDF]
Journal of Clinical and Diagnostic Research, 2020 Introduction: Accurate non-invasive imaging technique for characterising thyroid nodules has always been problematic. Diffusion-Weighted Magnetic Resonance Imaging (DW-MRI) is a functional MR imaging modality that quantifies the net diffusion of water ...
Kanika Bhargava +5 more
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Spatial variations of Rn and CO2 emissions in the Wuzhong–Lingwu region, northwest China
Frontiers in Earth Science, 2023 Soil gas Rn and CO2 in surface rupture and deep-seated fault zones are important indicators for tectonic and seismic activities. The spatial distributions of Rn and CO2 concentrations and their relationships with earthquakes and stress state in the ...
Xinyan Li +9 more
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Acoustic emissions and electric signal recordings, when cement mortar beams are subjected to three-point bending under various loading protocols [PDF]
Fracture and Structural Integrity, 2017 Two experimental techniques are used study the response of cement mortar beams subjected to three-point bending under various load¬ing protocols. The techniques used are the detection of weak electric current emissions known as Pressure Stimulated ...
A. Kyriazopoulos
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Frontiers in Physics, 2021 In order to investigate the relationship between rock microfracture mechanism and acoustic emission (AE) signal characteristic parameters under split loads, the MTS322 servo-controlled rock mechanical test system was employed to carry out the Brazilian ...
Li Shengxiang +7 more
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All Earth, 2023 The North-Eastern region of India has the distinction of being one of the most seismically active and tectonically complex regions in the world. The region has periodically jolted by a number of large earthquakes.
Anshuman Phukan, Debasis D Mohanty
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Sensors, 2023 In this paper, an approach to perform leak state detection and size identification for industrial fluid pipelines with an acoustic emission (AE) activity intensity index curve (AIIC), using b-value and a random forest (RF), is proposed.
Tuan-Khai Nguyen +2 more
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Dizhen xuebao, 2022 2021年5月21日21时21分至22时31分，云南大理州漾濞县接连发生4次MS≥5.0地震，分别为MS5.6，MS6.4，MS5.0和MS5.2地震。选取2015年1月1日至2021年6月4日漾濞地震震源区及其附近区域记录的地震资料，利用极大似然法计算研究区b值，通过分析漾濞地震前后不同时段的b值空间分布特征，得到以下主要认识：① 漾濞震群发生后，震源区b值出现快速下降，可能预示着局部地壳介质强度接近临界状态；② 漾濞4次MS≥5.0地震均沿剖面低b值异常区的边缘分布；③ 漾濞地震发生后 ...
Xianwei Zeng +5 more
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Fractal and Fractional, 2023 The frequency–magnitude statistics of 6527 earthquakes with 1.0 ≤ ml ≤ 5.7 and focal depths between 0 and 49 km in the Red Sea region between 1980 and 2021 show that the threshold magnitude, above which most of the Red Sea earthquakes are precisely ...
Sherif M. Ali, Kamal Abdelrahman
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