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662 results for “seismicity”
Monitoring water content variations from seismic noise in a controlled laboratory experiment: PART 1 [Dataset]
<p>This dataset has been obtained with an original laboratory experiment aimed at assessing the sensitivity of passive seismic interferometry imaging (PII) to controlled fluctuations in water content. Multiple controlled cycles of water imbibition and draining at the base of the sandbox produce significant variations in the seismic wavefield and especially in dominant surface waves. PART 1: seismic measurements from 0001 to 1500minutes</p>
Automatically deglitched dataset for "Searching the InSight seismic data for Mars's background free oscillations"
<p>The file Deglitched_sols.zip includes the dataset employed in the article "Searching the InSight seismic data for Mars's background free oscillations", published in<em> Seismological Research Letters.</em></p> <p>It includes 966 ".mseed" files, where each file corresponds to each automatically deglitched (SEISglitch + Twistpy) sol employed in the analysis. </p> <p>This dataset corresponds to the data depicted in Figure 6, and it was employed to produce Figure 8 (final results) of the manuscript. </p>
Seismic reflection data of profile across the Central Basin Fault and the Kyushu-Palau Ridge
<p>Seismic reflection profiles were acquired in 2020 by the R/V "Dayanghao" (Second Institute of Oceanology, Ministry of Natural Resources, China) using a 6040 cubic inch air gun array, discharged at 37.5 m intervals, and a 6-km-long, 480-channel streamer. Data were recorded for 14 s at 2 ms sampling intervals. Seismic data processing involved noise reduction, signal enhancement via filtering and deconvolution, velocity analysis, time migration, and depth migration. </p>
Quantitative Assessments of the Liquefaction Hazard of Soils considering Possible Strong Earthquakes in Seismically Active Regions of Russia
<p>Initial data for RESEARCH ARTICLE "Quantitative Assessments of the Liquefaction Hazard of Soils considering Possible Strong Earthquakes in Seismically Active Regions of Russia "</p>
Contrasting Crustal Signatures across the 2021 MS6.0 Luxian (China) Induced Earthquake Revealed by Dense Seismic and Magnetotelluric Data
<p>This is the main dataset supporting the 2021 Luxian (China) MS6.0 Earthquake paper</p> <p>MT folder contains MT data used in the inversion of the MT resistivity model and the final 3-D electrical resistivity model file (i.e., MT_resistivity.model)</p> <p>Seismic folder contains the continuous seismic waveforms (i.e., Continuous_seismic_waveforms.zip), the cross-correlation functions (i.e., Cross-correlation_Functions.zip), the final 3-D velocity model file (i.e., 3-D_VS_model.dat) and the our relocated earthquake catalogue (i.e., Relocated_earthquake_catalogue.dat)</p>
Valley of Mexico seismic records for array-based polarization analysis
<p>These seismic records were analyzed by Ruelas et al. (2024) "Array analysis of P-wave polarization data for constraining near-surface shear wave speeds: Application to the valley of Mexico seismic network" (https://doi.org/10.1093/gji/ggae355)</p> <p>The data herein presented were kindly provided by the "Red Sísmica del Valle de México (RSVM; Quintanar et al., 2018)", belonging to Servicio Sismológico Nacional (SSN, Mexican National Seismological Service); station maintenance, data acquisition, and distribution are thanks to its personnel. Financial support is provided by Consejo Nacional de Ciencia y Tecnología (CONACYT, National Council for Science and Technology), Universidad Nacional Autónoma de México (UNAM, National Autonomous University of Mexico), and Gobierno de la Ciudad de México (Government of Ciudad de México)."</p> <p>References</p> <p>Quintanar L., A. Cárdenas-Ramírez, D. I. Bello-Segura, V. H. Espíndola, J. A. Pérez-Santana, C. Cárdenas-Monroy, A. L. Carmona-Gallegos, and I. Rodríguez-Rasilla (2018); A Seismic Network for the Valley of Mexico: Present Status and Perspectives; Seismological Research Letters, Volume 89, Number 2A, pp. 356-362, March/April 2018; doi: 10.1785/0220170198.</p>
Analysing detection thresholds of lithological complexity and karst overprinting in outcrop-scale seismic models (SeisRox Pro modelling projects - supplementary data)
<p>This dataset includes pre-loaded and integrated data sets used for seismic modelling based on geomodels created by interpretation of DOMs.</p> <p>The dataset includes:</p> <ul> <li>Five different SeisRox modelling projects of the Landnørdingsvika model;</li> </ul> <p>1) base-case model and base-case+Noise in one project,</p> <p>2) 30Hz model,</p> <p>3) no_thin_units model,</p> <p>4) no_karst model,</p> <p>5) perfect_illumination model.</p> <ul> <li>Two different SeisRox modelling projects of the Treskelodden model;</li> </ul> <p>1) base-case model, base-case+Noise, 30Hz model, perfect_illumination model all in one project,</p> <p>2) model with 10x thicker Kapp Starostin layer in the overburden model.</p> <p>This dataset is related to a manuscript currently in review for Marine and Petroleum Geology.</p>
Analysing detection thresholds of lithological complexity and karst overprinting in outcrop-scale seismic models (Synthetic seismic models - supplementary data)
<p>This dataset includes pre-loaded seismic models based on digital outcrop models (DOMs) representing 11 different case scenarios with varying signal processing setting (frequency, illumination angle, noise) and different geological models for the DOMs. The case scenarios are set up to investigate detection tresholds in seismic models of thin beds with a high degree of lithological variation. </p> <p>The dataset includes:</p> <ul> <li>A Petrel 2022 project with 11 pre-loaded seismic models based on two different geomodels presented in the paper.</li> <li>The input SGY files for each seismic section and PSF used.</li> </ul> <p>This dataset is related to a manuscript currently in review for Marine and Petroleum Geology.</p>
Analysing detection thresholds of lithological complexity and karst overprinting in outcrop-scale seismic models (Well data for elastic rock parameters - supplementary data)
<p>This dataset includes pre-loaded and integrated data sets of the well data from boreholes on Spitsbergen. it also includes various maps of Svalbard to see where the boreholes are located. Rock parameters were plotted and determined using the blueback toolbox add-on to Petrel. </p> <p>The dataset used for rock parameter statisitcs includes:</p> <ul> <li>A Petrel 2022 project with well data (gamma ray, density, sonic, P-velocity, lithology) from the two boreholes Reindalspasset I (7816/2-1) and Tromsøbreen II (7617/1-2).</li> <li>Excel sheets with the wireline-log data used from the two boreholes. </li> </ul> <p>This dataset is related to a manuscript currently in review for Marine and Petroleum Geology.</p>
Dataset for "Fiber-Seismometer Hybrid Sensing for Seismic Imaging and Monitoring"
<p>The ambient noise dataset was collected on May 8, 2023, from a fiber-seismometer hybrid sensing deployment positioned along the Qiantang River in Hangzhou. The DAS data, Z-component and R-component data of seismometers are all stored in MAT format. Please refer to our study for detailed information on the dataset.</p> <p>Abstract about this study:</p> <p>Extreme climate events and geological disasters have intensified the urgency for advancing seismic imaging and monitoring. Despite developments in seismic instrumentation, particularly with seismometers and Distributed Acoustic Sensing (DAS), fine-scale observations remain challenging due to their inherent limitations and deployment configurations. This study introduces a novel hybrid sensing interferometry method that enhances multi-component signal extraction—especially poor horizontal components—through a two-step cross-correlation of DAS and seismometers. A field application near the Qiantang River in Hangzhou illustrates how our proposed framework retrieves high-quality multi-component empirical Green’s functions and advances ultra-short duration ambient noise seismic imaging techniques, including surface wave dispersion measurements and horizontal-to-vertical spectral ratio assessments. Our approach also facilitates monitoring of near-surface seismic velocity changes, dv/v, with an unprecedented 10-minute resolution, shedding light on shallow dynamic hydraulic responses. This innovative hybrid sensing framework offers new perspectives and methodologies for transforming future research in seismological observation, imaging, and monitoring. </p>
Seismic Catalogue for Hengill 2017-2022: Handpicked earthquakes
<p>Earthquake catalogue from the Hengill high-temperature geothermal area, SW Iceland, 2017-2022: Manually refined earthquakes.</p> <p>Iceland GeoSurvey (https://isor.is/) operates a local seismic network in the Hengill area (https://www.fdsn.org/networks/detail/OR/) for ON Power (https://www.on.is/), including streaming of real time data, automatic processing and manual refining of earthquake locations. The purpose of the network is to monitor ON Power’s geothermal operations and natural geothermal activity. All waveform data and earthquake locations made with the seismic network are owned by ON Power. The network is complemented with nearby stations from the SIL national seismic network of the Icelandic Meteorological Office (https://www.vedur.is/). </p> <p>For the purpose of the study “Scattering and absorption imaging of the Hengill high-temperature geothermal area, southwest Iceland” by Napolitano et al., ON Power shares earthquake locations of ML > 0.5 between latitude: 64.02°N - 64.15°N and longitude: 21.1°W - 21.4°W. The earthquake catalogue consists of 2240 events from 2017-2022. ÍSOR manually refined both P and S phases for all 2240 events in the catalogue used for the attenuation tomography. The initial automatic SeisComP picks were generated using the SIL velocity model (Bjarnason et al., 1993), with a constant Vp/Vs ratio of 1.78. </p> <p> </p>
Netherlands F3 block and New Zealand Kerry-3D seismic attributes
<p>The dataset comprises sub-volumes of seismic attributes, which include structural smoothed seismic data, chaos, variance, semblance, similarity, and the most positive curvature from the F3 block and Kerry-3D seismic data. The selected sub-volumes are from regions with a high occurrence of faults.</p>
Fine seismic imaging of the Lianhuashan fault zone, South China, and tectonic implications – Constrained by ambient noise adjoint tomography
<p>The Rayleigh wave group velocity dispersion and the cross-correlation functions used in the study "Fine seismic imaging of the Lianhuashan fault zone, South China, and tectonic implications – Constrained by ambient noise adjoint tomography".</p>
Plots source data for the Communications Earth & Environment research article titled: Diurnal expansion and contraction of englacial fracture networks revealed by seismic shear wave splitting
<p>The source data for plotting figures presented in the main text of article titled: Diurnal expansion and contraction of englacial fracture networks revealed by seismic shear wave splitting.</p>
Hourly Root Mean Square (RMS) of hydrothermal seismic tremor recorded at Ischia and Campi Flegrei
<p>Hourly Root Mean Square (RMS) of the amplitude of hydrothermal seismic tremor for:</p> <p>1) Time series from 01 Jan to 29 Jun 2020 (180 days) recorded at IOCA station (INGV seismic network), Ischia. Data filtered in the [1-2 Hz] frequency band.</p> <p>2) Time series from 24 Mar to 8 Jun 2020 (75 days) recorded at T1367 station (INGV seismic network), Ischia. Data filtered in the [1-2 Hz] frequency band.</p> <p>3) Time series from 01 Jan to 19 Apr (109 days) recorded at CPIS station (INGV seismic network), Campi Flegrei. Data filtered in the [5-15 Hz] frequency band.</p> <p>4) Time series from 15 Feb to 30 Jun 2020 (136 days) recorded at ASBG station (INGV seismic network), Campi Flegrei. Data filtered in the [0.4-1 Hz] frequency band.</p>
Seismic wave propagation in partially saturated rocks with a fractal distribution of fluid-patch size
<p>Laboratory experiments on partially saturated rocks show that seismic attenuation can be significant, where the main mechanism is wave-induced local fluid flow (WILFF) due to patchy saturation at different spatial scales. We propose a theory to obtain the seismic properties of partially saturated rocks based on fractal (self-similar) patches, leading to an effective frequency-dependent fluid modulus. The model combines the differential effective medium (DEM) and Biot-Rayleigh theories, where the patches are inclusions incrementally added, such that the effective fluid is assumed the host for the next addition. The analysis shows that the seismic properties are independent on the number of iterations, but depend on the scale range (radius) of the inclusions, fractal dimension <em>D<sub>f</sub></em> of the self-similar distribution, parameter <span class="math-tex">\(\theta\)</span> of the exponential distribution, mean radius <em>r</em><sub>0</sub> and variance <span class="math-tex">\({\sigma_r}^2\)</span> of the Gaussian distribution. Forced-oscillation experiments are performed on a limestone sample under partial water-saturation conditions at seismic frequencies (2-500 Hz), to obtain the velocity dispersion and extensional attenuation. The proposed theory provides a reasonable description of the experimental data and other existing measurements on Berea sandstone and tight carbonates.</p>
Cascading rupture process of the 2021 Maduo, China earthquake revealed by the joint inversion of seismic and geodetic data
<p>The coseismic Sentinel-1 line-of-sight (LOS) displacements, strong-motion and teleseismic waveforms used in the joint inversion of the source rupture process for the 2021 Maduo, China earthquake are included in this repository.</p>
Pre-existing Structures and Stress Variations Jointly Control the Induced Seismicity in Enhanced Geothermal System of Gonghe Basin, China
<p>This is the dataset available for the article titled "Pre-existing Structures and Stress Variations Jointly Control the Induced Seismicity in Enhanced Geothermal System of Gonghe Basin, China", including phase information, earthquake catalog, waveforms of earthquakes and resolved focal mechanisms, 1D velocity model.</p>
Induced seismicity within the Groningen gas field
<p>The data set used in the Bourne & Oates article: 'Extreme threshold failures within a heterogeneous elastic thin-sheet and the spatial-temporal development of induced seismicity within the Groningen gas field'.</p>
Sample of seismic waveform data for rfmpy tutorial
<p>Sample of seismic waveform data for rfmpy tutorial (<a href="https://github.com/kemichai/rfmpy">https://github.com/kemichai/rfmpy</a>). Sub-set of seismic data from EASI seismic network that are cut around a number of different teleseismic events. The continuous full waveform data from EASI seismic network are available at: the European Integrated Data Archive EIDA; <a href="http://www.orfeus-eu.org/data/eida/">http://www.orfeus-eu.org/data/eida/</a> with the network code <strong>XT</strong>.</p>
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
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