Induced seismicity in coal and iron ore regions of Kuzbass

According to the results of seismicity monitoring in the Kemerovo region, seismic activations are studied near coal enterprises and iron ore mines. The spatial-temporal variability of induced seismicity in Kuzbass is shown. It has been established that the strongest subsoil activations in the area of mining occur as short-term activations lasting 1-2 months and repeated several times in one to two years. The following similar activations are already taking place at other objects. Induced seismicity in Mountains Shoria is considered. The effect of partial synchronization of the development of seismicity was discovered at the mines of Kazsky, Sheregeshsky, Tashtagolsky, located one hundred kilometers apart.

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The Forecasting of Groundwater Fluctuations using Time Series Analysis and Combination of Data-Driven Models

10.22541/au.161698878.88793891/v1 ◽

2021 ◽

Author(s):

Amirhossein Najafabadipour ◽

Gholamreza Kamali ◽

Hossein Nezamabadi-pour

Keyword(s):

Iron Ore ◽

Least Squares Method ◽

Moving Average ◽

Groundwater Resources ◽

Mining Area ◽

Data Driven ◽

Short Term ◽

Iron Ore Mine ◽

Groundwater Fluctuations ◽

Groundwater Drainage

The Forecasting of Groundwater Fluctuations is a useful tool for managing groundwater resources in the mining area. Water resources management requires identifying potential periods for groundwater drainage to prevent groundwater from entering the mine pit and imposing high costs. In this research, Auto-Regressive Integrated Moving Average (ARIMA) and Holt-Winters Exponential Smoothing (HWES) data-driven models were used for short-term modeling of the groundwater fluctuations in a piezometer around the Gohar Zamin Iron Ore Mine. For this purpose, 250 non-seasonal groundwater fluctuations data in the period 22-Nov-2018 to 29-Jul-2019, 200 data for modeling, and 50 data for prediction were used. To take advantage of all the features of the two developed models, the predictions are combined with different methods and specific weights. The results show better accuracy for the ARIMA method between the two short-term forecasts, while the HWES method requires less time for modeling. Also, among all the predictions made, the highest accuracy for the combined least-squares method is for forecasting the groundwater fluctuations in the short-term. All the forecasts show a decrease in the groundwater fluctuations, indicating pumping wells around the Gohar Zamin Iron Ore Mine area.

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Avoiding Pitfalls and Extracting Value: Lessons for Induced Seismicity Monitoring.

10.3997/2214-4609.201902001 ◽

2019 ◽

Author(s):

B. Dando ◽

V. Oye ◽

B. Goertz-Allmann ◽

A. Wuestefeld

Keyword(s):

Induced Seismicity ◽

Seismicity Monitoring

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Well-Log-Based Velocity and Density Models for the Montney Unconventional Resource Play in Northeast British Columbia, Canada, Applicable to Induced Seismicity Monitoring and Research

Seismological Research Letters ◽

10.1785/0220200213 ◽

2020 ◽

Author(s):

Alireza Babaie Mahani ◽

Dmytro Malytskyy ◽

Ryan Visser ◽

Mark Hayes ◽

Michelle Gaucher ◽

...

Keyword(s):

British Columbia ◽

Hydraulic Fracturing ◽

Cross Sections ◽

Induced Seismicity ◽

Focal Depth ◽

Depth Resolution ◽

Velocity Model ◽

The North ◽

Seismicity Monitoring ◽

Unconventional Resource

Abstract We present detailed velocity and density models for the Montney unconventional resource play in northeast British Columbia, Canada. The new models are specifically essential for robust hypocenter determination in the areas undergoing multistage hydraulic-fracturing operations and for detailed analysis of induced seismicity processes in the region. For the upper 4 km of the sedimentary structure, we review hundreds of well logs and select sonic and density logs from 19 locations to build the representative models. For depths below 4 km, we extend our models using data from the southern Alberta refraction experiment (Clowes et al., 2002). We provide one set of models for the entire Montney play along with two separated sets for the southern and northern areas. Specifically, the models for the southern and northern Montney play are based on logs located in and around the Kiskatinaw Seismic Monitoring and Mitigation Area and the North Peace Ground Motion Monitoring area, respectively. To demonstrate the usefulness of our detailed velocity model, we compare the hypocenter location of earthquakes that occurred within the Montney play as determined with our model and the simple two-layered model (CN01) routinely used by Natural Resources Canada. Locations obtained by our velocity model cluster more tightly with the majority of events having root mean square residual of <0.2 s compared with that of <0.4 s when the CN01 model is used. Cross sections of seismicity versus depth across the area also show significant improvements in the determination of focal depths. Our model results in a reasonable median focal depth of ∼2 km for events in this area, which is consistent with the completion depths of hydraulic-fracturing operations. In comparison, most solutions determined with the CN01 model have fixed focal depths (0 km) due to the lack of depth resolution.

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A review of the current status of induced seismicity monitoring for hydraulic fracturing in unconventional tight oil and gas reservoirs

Fuel ◽

10.1016/j.fuel.2019.01.026 ◽

2019 ◽

Vol 242 ◽

pp. 195-210 ◽

Cited By ~ 38

Author(s):

Lei Li ◽

Jingqiang Tan ◽

David A. Wood ◽

Zhengguang Zhao ◽

Dirk Becker ◽

...

Keyword(s):

Hydraulic Fracturing ◽

Induced Seismicity ◽

Oil And Gas ◽

Current Status ◽

Tight Oil ◽

Gas Reservoirs ◽

Seismicity Monitoring ◽

Oil And Gas Reservoirs ◽

Tight Oil And Gas

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Effects of short-term rain events on mobile macrofauna living on seawalls

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315407055117 ◽

2007 ◽

Vol 87 (5) ◽

pp. 1069-1074 ◽

Cited By ~ 2

Author(s):

David J. Blockley ◽

Victoria J. Cole ◽

Julie People ◽

M. Gabriela Palomo

Keyword(s):

Temporal Variability ◽

Weather Conditions ◽

Short Term ◽

Run Off ◽

Sydney Harbour ◽

Manipulative Experiments ◽

Negative Effect ◽

Artificial Rain ◽

Rain Events ◽

Term Rain

The distribution and abundance of intertidal organisms can be affected by short-term events, such as rain. We compared the effects of rain on intertidal mobile invertebrates in four common microhabitats with differing amounts of shelter (namely beds of oysters, coralline turf, bare patches and crevices) on sea walls in Sydney Harbour. There was an effect of rain on some, but not all taxa, although this was not consistent between locations or times. Effects of rain were observed for some species of gastropods and crustaceans, but not for polychaetes. Manipulative experiments using artificial rain indicated that rain, without the presence of run-off and independent of potential temporal confounding from differences in weather conditions, has a negative effect on abundances of amphipods in coralline turf. Pulse responses by mobile organisms to short-term rain events should be considered when designing experiments looking at temporal variability and processes responsible for observed patterns of distribution of marine organisms.

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Modeling Short-Term Spatial and Temporal Variability of Groundwater Level Using Geostatistics and GIS

Natural Resources Research ◽

10.1007/s11053-011-9167-8 ◽

2012 ◽

Vol 21 (1) ◽

pp. 117-136 ◽

Cited By ~ 25

Author(s):

Deepesh Machiwal ◽

Amit Mishra ◽

Madan K. Jha ◽

Arun Sharma ◽

S. S. Sisodia

Keyword(s):

Groundwater Level ◽

Temporal Variability ◽

Spatial And Temporal Variability ◽

Short Term

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Impact of hydrometeorological conditions on the Southern Baltic cliff coast development in the annual and long-term weather cycle

10.5194/egusphere-egu2020-21462 ◽

2020 ◽

Author(s):

Jacek Tylkowski ◽

Andrzej Kostrzewski ◽

Marcin Winowski

Keyword(s):

Coastal Zone ◽

Temporal Variability ◽

Dominant Role ◽

Spatial Diversity ◽

Estimation Of Parameters ◽

Short Term ◽

Time Decomposition ◽

Geomorphological Processes ◽

Southern Baltic ◽

Hydrometeorological Conditions

To determine the specificity of functioning the Southern Baltic coasts, it is necessary to identify the hydrometeorological conditions that have the greatest effect on the dynamics of geomorphological processes in detail. For the offshore coastal zone, it is important to determine temporal variability (including trend, cyclicality and seasonality) and spatial diversity (i.e. for cliff and dune coasts) of occurrence of main hydrometeorological and geomorphological processes and events. Among hydrometeorological and geomorphological factors - which are decisive for violent, intense and sometimes irreversible changes in the natural environment - extreme events play an important and sometimes dominant role (Tylkowski, Hojan 2018).Geomorphological changes of the cliff coast depend mainly on the dynamics of marine and slope erosion. The high sea level that occurs during storm swells and intense precipitation lead to the transformation of the cliff coast, which is seen in the retraction of the cliff crown, among others (Kostrzewski et al. 2015).The purpose of the work was to determine the temporal variability of hydrometeorological conditions, which have the greatest effect on the dynamics of the erosion of the cliff shores of the Wolin island. Hydrometeorological conditions from 1985 &#8211; 2019 period were compared to the annual measurements of the cliff crown retraction, which were carried out on 5 test sections in the coastal zone of the Pomeranian Bay on the island of Wolin. The work indicates the occurrence of above-average and extreme hydrometeorological events that potentially favoured the occurrence of erosive processes, e.g. mass movements, slopewash and aeolian erosion.Using ARIMA modelling, time decomposition of hydrometeorological conditions was made and their short-term forecasts were formulated. The study determined non-seasonal and seasonal parameters that determine the occurrence of current and future meteorological and marine conditions. What is more, spatial differences in the scope of identification of the features of the analysed time series, estimation of parameters of selected models and the formulated forecast are indicated (Tylkowski, Hojan 2019).&#160;&#160;ReferencesTylkowski J., Hojan M., 2018. Threshold values of extreme hydrometeorological events on the Polish Baltic coast. Water 10(10), 1337. doi:10.3390/w10101337Kostrzewski A., Zwoli&#324;ski Z., Winowski M., Tylkowski J., Samo&#322;yk M., 2015. Cliff top recesion rate and cliff hazards for the sea coast of Wolin Island (Southern Baltic). Baltica 28(2): 109-120. doi:10.5200/baltica.2015.28.10Tylkowski J., Hojan M., 2019: Time decomposition and short-term forecasting of hydrometeorological conditions in the South Baltic coastal zone of Poland. Geosciences 9(68). doi.org/10.3390/geosciences9020068

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