Epicentral distance - Wikipedia
WEBEpicentral distance refers to the ground distance from the epicenter to a specified point. Generally, the smaller the epicentral distance of an earthquake of the same scale, the heavier the damage caused by the earthquake.
Complex Neural Networks for Estimating Epicentral Distance, Depth, and ...
WEBFeb 25, 2021 · In this way, our method benefits both from extracting relevant information through time–frequency domain analysis and from designing a single architecture that deals with complex information. The proposed method achieves a mean absolute error of 4.51 km for epicentral distance, 6.15 km for depth, and 0.26 for magnitude estimation.
Machine Learning‐Based Rapid Epicentral Distance
WEBFeb 7, 2024 · To rapidly and reliably predict epicentral distance, we developed machine learning models with multiple feature inputs for epicentral distance estimation using a single station and explored the feasibility of three machine learning methods, namely, Random Forest, eXtreme Gradient Boosting, and …
Hybrid predictor for ground-motion intensity with machine
WEBJul 27, 2020 · Figures 6 and 7 show the PGA prediction of the hybrid predictor as a function of epicentral distance and M w, respectively. The distance attenuation and the magnitude scaling of PGA, which have ...
Receiver Functions with S Waves | SpringerLink
WEBJan 1, 2016 · The absolute value of the transmission coefficients increases with increasing slowness (decreasing epicentral distance). The horizontal axis of slowness and epicentral distance refers to the reference S and SKS waves, which may significantly differ from those of the converted waves at near-critical incidence angles.
Seismic, Receiver Function Technique | SpringerLink
WEBJan 1, 2014 · In moveout correction, the timescale is stretched or compressed in order to parallelize the same type of traveltime curves. A fixed reference slowness of 6.4 s/degree (or 67° epicentral distance) is frequently used at which the timescale remains unchanged.
A New Method of Quickly Estimating Epicentral Distance and Magnitude ...
WEBFeb 1, 2003 · We have found that log B is inversely proportional to log Δ, where Δ is the epicentral distance. This relation holds true regardless of the earthquake magnitude. By using this relation, we can roughly estimate the epicentral distance nearly immediately after the P-wave arrival.
Complex Neural Networks for Estimating Epicentral Distance, …
WEBGeology, Computer Science, Physics. TLDR. A novel approach for estimating epicentral distance, depth, and magnitude directly from individual raw three-component seismograms of 1-min length observed by single stations is proposed, using a convolutional neural network-based method. Expand.
WEBwhere Ll is an epicentral distance, and Aa and A denote the maximum trace amplitudes, on a specified seismograph, of the standard event and the one to be measured, respectively. The standard earthquake, i.e. M = 0 (=logl) in Richter's formula, is such as to give the maximum trace amplitude of ... a continuous regression function. Employing the ...
A New Method of Quickly Estimating Epicentral Distance
WEBFeb 1, 2003 · These methods, which use the empirical relationship between the initial P-wave slope and epicentral distance, can estimate the epicentral distance from a single P waveform of the vertical component.
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