A5015869341- earthquake and tectonic studies
- Earthquake Detection and Analysis
- High-pressure geophysics and materials
- Seismic Imaging and Inversion Techniques
- Seismology and Earthquake Studies
- Geological and Geochemical Analysis
- Hydraulic Fracturing and Reservoir Analysis
- Geochemistry and Geologic Mapping
- Hydrocarbon exploration and reservoir analysis
- Atmospheric and Environmental Gas Dynamics
- Drilling and Well Engineering
- Geotechnical and Mining Engineering
- Rock Mechanics and Modeling
- Geological and Geophysical Studies
- Methane Hydrates and Related Phenomena
- Seismic Waves and Analysis
- Anomaly Detection Techniques and Applications
- Mining and Industrial Processes
- Complex Systems and Time Series Analysis
- GNSS positioning and interference
- Industrial and Mining Safety
- Air Quality Monitoring and Forecasting
- Market Dynamics and Volatility
- Reservoir Engineering and Simulation Methods
- Astronomical Observations and Instrumentation
University of Southampton
2021-2024
MathWorks (United Kingdom)
2023
National Oceanography Centre
2021-2022
Institute of Geophysics
2016-2020
Polish Academy of Sciences
2014-2020
Aristotle University of Thessaloniki
2012-2017
Czech Academy of Sciences, Institute of Geophysics
2017
Abstract Mining, water-reservoir impoundment, underground gas storage, geothermal energy exploitation and hydrocarbon extraction have the potential to cause rock deformation earthquakes, which may be hazardous for people, infrastructure environment. Restricted access data constitutes a barrier assessing mitigating associated hazards. Thematic Core Service Anthropogenic Hazards (TCS AH) of European Plate Observing System (EPOS) provides novel e-research infrastructure. The core this...
The Seismic Hazard Parameters Evaluation (SHAPE) toolbox (Leptokaropoulos and Lasocki, SRL, 2020, https://doi.org/10.1785/0220190319) has evolved into SHAppE, an interactive MATLAB app. SHAppE facilitates probabilistic assessment of seismic hazard parameters, including the mean return period (MRP) exceedance probability (EP) earthquake magnitudes, along with confidence intervals. Its features support real-time analysis visualization, making it suitable for researchers practitioners analyzing...
Confirming the prompt and accurate notification of earthquakes is vital for mitigating their potential impacts. To achieve this, statistical approaches, including Machine Learning (ML), have become indispensable tools across various scientific fields, particularly in Seismology seismic data. This research explores utilization ML techniques to improve earthquake real time alerts. The case study Greece surrounding region, an area with highest activity throughout Mediterranean....
The International Seismological Centre (ISC) combines seismic observations from ~150 agencies in ~100 counties to produce the definitive global earthquake catalogue by combining phase arrivals. As well as data, hypocentres and magnitudes ISC Bulletin includes other parameters such moment tensors that are reported many agencies. This data is freely accessible, searchable downloadable through website (www.isc.ac.uk/iscbulletin). Earthquake Toolbox for MATLAB provides access this parametric via...
Research Article| October 01, 2013 A Homogeneous Earthquake Catalog for Western Turkey and Magnitude of Completeness Determination Konstantinos M. Leptokaropoulos; Leptokaropoulos School Geology, Geophysics Department, Aristotle University Thessaloniki, GR54124 Greecekleptoka@geo.auth.grvkarak@geo.auth.grritsa@geo.auth.gradaggela@yahoo.gr Search other works by this author on: GSW Google Scholar Vassilios G. Karakostas; Karakostas Eleftheria E. Papadimitriou; Papadimitriou Aggeliki K....
The Geysers geothermal field located in California, USA, is the largest site world, operating since 1960s. We here investigate and quantify correlation between temporal seismicity evolution variation of injection data by examination time-series through specified statistical tools (binomial test to significant rate changes, cross seismic data, b-value analysis). To do so, we utilize operational associated with two wells (Prati-9 Prati-29) which cover a time period approximately 7 yr (from...
Research in the field of anthropogenic seismicity (AS) requires not only data but also regarding progress technological/production activities which is origin induced or triggered seismic events. Such are typically restricted and proprietary, therefore, usually available for independent researchers who wish to develop, perform verify scientific research. The seismicity-European plate observing system (IS-EPOS) web portal offers its user's access data, applications documents order facilitate...
Abstract Oceanic transform faults are intriguing in that they do not produce earthquakes as large might be expected given their dimensions. We use 1‐year of local seismicity (370 events above M C = 2.3) recorded on an array ocean bottom seismometers (OBSs) and geophysical data to study the seismotectonic properties Chain transform, located equatorial Mid‐Atlantic. extend our analysis back time by considering stronger ( W ≥ 5.0) from global catalogs. divide into three areas (east, central,...
Abstract We use a high‐quality data set from the NW part of The Geysers geothermal field to determine statistical significance temporal static stress drop variations and their relation injection rate changes. group 322 seismic events which occurred in proximity Prati‐9 Prati‐29 wells examine influence parameters such as moment magnitude, focal mechanism, hypocentral depth, normalized distances open‐hole sections on Our results indicate that (1) time are statistically significant, (2)...
Abstract The gravitational pulls from the moon and sun result in tidal forces which influence both Earth's solid water mass. These stresses are periodically added to tectonic ones may become sufficient for initiating rupture fault systems critically close failure. Previous research indicates correlations between increased seismicity rates low tides fast‐ intermediate‐spreading mid‐ocean ridges Pacific Ocean. Here, we present a microseismicity data set (4,719 events) recorded by an ocean...
Seismicity rate changes in northern Aegean area were studied by applying the Dieterich (1994) Rate/State formulation. The study was divided into four smaller ones that exhibit seismotectonic homogeneity and accommodate strong events with similar to identical focal mechanisms. evaluation concerns 'study period' between 1981 December 19 2010 August 31, whereas reference seismicity estimated for 'learning lasting from 1970 January 1 19. coseismic slip of strongest (Mw ≥ 5.8) occurred during...
Catalogue-based studies are of central importance in seismological research, to investigate the temporal, spatial and size distribution earthquakes specified study areas. Methods for estimating fundamental catalogue parameters like Gutenberg–Richter (G-R) b-value completeness magnitude (Mc) well established routinely applied. However, magnitudes reported seismicity catalogues contain measurement uncertainties which may significantly distort estimation derived parameters. In this study, we...
SUMMARY Earthquake magnitude (size) distribution is a major component required for seismic hazard assessment and therefore, the accurate determination of its functional shape variation task utmost importance. Although often considered as stationary, at particular sites may significantly vary over time space. In this study, well-known Gutenberg–Richter (GR) law, which widely assumed to describe earthquake distribution, tested case study seismicity induced by fluid injection The Geysers (CA,...
Constraining the controlling factors of fault rupture is fundamentally important. Fluids influence earthquake locations and magnitudes, although exact pathways through lithosphere are not well-known. Ocean transform faults ideal for studying fluid given their relative simplicity. We analyse seismicity recorded by Passive Imaging Lithosphere-Asthenosphere Boundary (PI-LAB) experiment, centred around Chain Fracture Zone. find earthquakes beneath morphological transpressional features occur...
A point process, e.g., the seismic is potentially predictable when it non-stationary, internally correlated or both. In this paper, an analysis of occurrence process mining-induced events from Rudna copper mine in Poland presented. Stationarity and internal correlation are investigated complete time series segmentally subseries demonstrating relatively stable seismicity rates. It shown that non-stationary; however, most their shorter become stationary. stationary subseries, distribution...
Abstract Many seismic processes, in particular, those induced by technological activities for exploitation of georesources, are time dependent. The changes the seismicity cause that related hazard as well. We present here Seismic HAzard Parameters Evaluation (SHAPE) tool, which enables an assessment temporal mean return period (MRP) a event given magnitude and exceedance probability (EP) within predefined period. SHAPE is open-source software package, written MATLAB (see Data Resources),...
Reservoir-triggered seismicity (RTS) has the potential to generate disastrous seismic events of M6 and bigger. Song Tranh 2 (STR2) is an artificial water reservoir located in Central Vietnam. High activity been observed this area since was first filled 2011. The relation between level complex, previous studies have led conclusion that ongoing STR2 example delayed response type RTS. However, phase after impoundment deemed a rapid type. There were three stages filling periods: first, period...
This paper introduces "MISTIC", a magnitude independent program for the analysis of spatio-temporal earthquake clustering, developed on basis simple clustering algorithm which is implemented in Matlab. The method conceptually based upon comparison inter-event time and epicentral/hypocentral distance between subsequent events, with pre-defined values, without any constraints. code identifies spatial concentrations seismic activity exhibit enhanced occurrence rates, significantly higher than...
The spatio-temporal variation in seismicity western Turkey since the late 1970s is investigated through a rate/state model, which considers stressing history to forecast reference rate evolution. basic catalog was divided according specific criteria into four subsets, correspond areas exhibiting almost identical seismotectonic features. Completeness magnitude and rates are individually calculated for each subset. forecasting periods selected be inter-seismic time intervals between successive...
The influence of fluid injection rates on the magnitude distribution seismicity which occurred in NW part Geysers geothermal site is studied here. A direct comparison between rate changes and b value response attempted after appropriate selection data subsets. Due to relatively small sample (1121 events, corresponding an average ~ 0.45 events/day), we also aggregated seismic activity into two families increasing decreasing rates, respectively. values were calculated as a function time lag...
The increasing volume and complexity of Earth environmental data requires an efficient, interdisciplinary collaboration between scientists providers. This can be achieved by utilising research infrastructures providing advanced e-services exploiting integration interoperability, seamless machine-to-machine exchange HPC/ cloud facilities.   In this contribution we will present a case study geodata import, analysis visualization, carried out on the ENES Data Space...