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Inversion of gravity data is an important method for investigating subsurface density variations relevant to mineral exploration, geothermal assessment, carbon storage, natural hydrogen, groundwater resources, and tectonic evolution. Here…

地球物理 · 物理学 2026-04-07 Pankaj K Mishra , Sanni Laaksonen , Jochen Kamm , Anand Singh

Convolutional neural networks can provide a potential framework to characterize groundwater storage from seismic data. Estimation of key components such as the amount of groundwater stored in an aquifer and delineate water-table level, from…

The overall morphology and dynamics of magnetospheric substorms is well established in terms of the observed qualitative auroral features seen in ground-based magnetometers. This paper focuses on the quantitative characterization of…

空间物理 · 物理学 2016-06-09 J. Dods , S. C. Chapman , J. W. Gjerloev

Rapid and accurate estimation of post-earthquake ground failures and building damage is critical for effective post-disaster responses. Progression in remote sensing technologies has paved the way for rapid acquisition of detailed,…

地球物理 · 物理学 2024-12-03 Xuechun Li , Susu Xu

Seismic inversion plays a very useful role in detailed stratigraphic interpretation of seismic data. Seismic inversion enables estimation of rock properties over the complete seismic section. Traditional and machine learning-based seismic…

地球物理 · 物理学 2021-04-08 Ahmad Mustafa , Motaz Alfarraj , Ghassan AlRegib

Airborne magnetic data are commonly used to produce preliminary geological maps. Machine learning has the potential to partly fulfill this task rapidly and objectively, as geological mapping is comparable to a semantic segmentation problem.…

We present a new approach to the electromagnetic inverse problem that explicitly addresses the ambiguity associated with its ill-posed character. Rather than calculating a single ``best'' solution according to some criterion, our approach…

神经元与认知 · 定量生物学 2007-05-23 David M. Schmidt , John S. George , C. C. Wood

We present a wave-equation inversion method that inverts skeletonized data for the subsurface velocity model. The skeletonized representation of the seismic traces consists of the low-rank latent-space variables predicted by a well-trained…

地球物理 · 物理学 2019-04-25 Yuqing Chen , Gerard T. Schuster

Usual inversion for earthquake source parameters from tsunami wave data incorporates subjective elements. Noisy and possibly insufficient data also results in instability and non-uniqueness in most deterministic inversions. Here we employ…

The paper is a first attempt for statistical estimation of method for a short time prediction of incoming earthquake in the Balkan and Black Sea region from January to June, 2002. The essence of the discovery is that the geomagnetic local…

地球物理 · 物理学 2007-05-23 S. Cht. Mavrodiev

Earthquakes cannot be predicted with precision, but algorithms exist for intermediate-term middle range prediction of main shocks above a pre-assigned threshold, based on seismicity patterns. Few years ago, a first attempt was made in the…

地球物理 · 物理学 2017-03-07 G. F. Panza , A. Peresan , F. Sansò , M. Crespi , A. Mazzoni , A. Nascetti

We report precursory seismic patterns prior to the 2016 Kumamoto earthquakes, as measured by four different methods based on changes in seismicity that can be used for earthquake forecasting: the b-value method, two methods of seismic…

地球物理 · 物理学 2016-11-08 K. Z. Nanjo , J. Izutsu , Y. Orihara , N. Furuse , S. Togo , H. Nitta , T. Okada , R. Tanaka , M. Kamogawa , T. Nagao

The starting point of the present review is to acknowledge that there are innumerable reports of non-seismic types of earthquake precursory phenomena that are intermittent and seem not to occur systematically, while associated reports are…

地球物理 · 物理学 2017-11-07 Friedemann Freund , Guy Ouillon , John Scoville , Didier Sornette

The planet Earth has hundreds of impact events, with some occurrences causing both in terms of human casualty as well as economic losses. Such attitudes of earth pushed the frontiers to develop innovative monitoring strategies for the earth…

网络与互联网体系结构 · 计算机科学 2014-08-04 Satyajit Rath , B. P. S. Sahoo , S. K. Pandey , D. P. Sandha

Reliable earthquake detection and seismic phase classification is often challenging especially in the circumstances of low magnitude events or poor signal-to-noise ratio. With improved seismometers and better global coverage, a sharp…

地球物理 · 物理学 2022-04-07 Wei Li , Yu Sha , Kai Zhou , Johannes Faber , Georg Ruempker , Horst Stoecker , Nishtha Srivastava

The MyShake project aims to build a global smartphone seismic network to facilitate large-scale earthquake early warning and other applications by leveraging the power of crowdsourcing. The MyShake mobile application first detects…

地球物理 · 物理学 2022-06-09 Qingkai Kong , Robert Martin-Short , Richard M. Allen

The association of seismic wave arrivals with causative earthquakes becomes progressively more challenging as arrival detection methods become more sensitive, and particularly when earthquake rates are high. For instance, seismic waves…

地球物理 · 物理学 2023-01-18 Ian W. McBrearty , Joan Gomberg , Andrew A. Delorey , Paul A. Johnson

This paper develops a novel method, based on hidden Markov models, to forecast earthquakes and applies the method to mainshock seismic activity in southern California and western Nevada. The forecasts are of the probability of a mainshock…

应用统计 · 统计学 2014-11-21 Daniel W. Chambers , Jenny A. Baglivo , John E. Ebel , Alan L. Kafka

It is demonstrate that the analysis of accuracy measurement of geomagnetic field and the behavior of local tide gravitational potential can serve as an earthquake precursor

地球物理 · 物理学 2007-05-23 S. Cht. Mavrodiev

The detection of earthquakes is a fundamental prerequisite for seismology and contributes to various research areas, such as forecasting earthquakes and understanding the crust/mantle structure. Recent advances in machine learning…

地球物理 · 物理学 2023-07-14 Tomoki Tokuda , Hiromichi Nagao