2011
Idziak, A. F.; Dubiel, R.
Geophysics in Mining and Environmental Protection Journal Article
In: GeoPlanet: Earth and Planetary Sciences, vol. 3, 2011, ISSN: 21905193, (8).
@article{2-s2.0-84894627955,
title = {Geophysics in Mining and Environmental Protection},
author = { A.F. Idziak and R. Dubiel},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84894627955&doi=10.1007%2f978-3-642-19097-1&partnerID=40&md5=ae97e02919d44ad0ab64fe4e1829ba80},
doi = {10.1007/978-3-642-19097-1},
issn = {21905193},
year = {2011},
date = {2011-01-01},
journal = {GeoPlanet: Earth and Planetary Sciences},
volume = {3},
abstract = {[No abstract available]},
note = {8},
keywords = {},
pubstate = {published},
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}
Idziak, A. F.; Dubiel, R.
Preface Book
2011, ISSN: 21905193.
@book{2-s2.0-84894607894,
title = {Preface},
author = { A.F. Idziak and R. Dubiel},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84894607894&partnerID=40&md5=d46e69422b71e7d1a36da037a4117a5a},
issn = {21905193},
year = {2011},
date = {2011-01-01},
journal = {GeoPlanet: Earth and Planetary Sciences},
volume = {3},
pages = {ix-x},
abstract = {[No abstract available]},
keywords = {},
pubstate = {published},
tppubtype = {book}
}
2009
Żogała, B.; Dubiel, R.; Zuberek, W. M.; Steininger, M.; Wzientek, K.; Robak, M.
Geoelectrical methods for detection of oil contaminations in soils and bioremediation process monitoring Proceedings
vol. 1, 2009, ISSN: 15548015, (4).
@proceedings{2-s2.0-84867258325,
title = {Geoelectrical methods for detection of oil contaminations in soils and bioremediation process monitoring},
author = { B. Żogała and R. Dubiel and W.M. Zuberek and M. Steininger and K. Wzientek and M. Robak},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84867258325&partnerID=40&md5=0127aa47a51dd56183e09c52fac0a7fa},
issn = {15548015},
year = {2009},
date = {2009-01-01},
journal = {Proceedings of the Symposium on the Application of Geophyics to Engineering and Environmental Problems, SAGEEP},
volume = {1},
pages = {367-381},
abstract = {The goal of the experiment was to verify the geoelectrical methods as a tool for detection of oil contaminations in soils and to monitor their bioremediation process. The survey area of approximately 2000 m2 is situated in the former military camp Borne Sulinowo in NW Poland. The area is covered by fluvioglacial sediments composed of sands and gravels with the first water level at the 11 12 m depth. Numerous shallow bore-holes were drilled to recognize the detailed geological structure. The measurements with conductivity meter (Geonics EM-31Mk2) and resistivity Lund Imaging System were carried out and soils samples were taken for laboratory tests in fall 2007. Then 70 litres of diesel fuel was spilled on the 3m2 area and in this way introduced into the soil. The geophysical measurements and laboratory tests were repeated. The measurements showed the distinct anomaly of resistivity or apparent conductivity related to oil contamination of soil. In order to carry out the bioremediation process the Yarrowia Lipolytica yeast were introduced into the contaminated soil in spring 2008. Then, the bioremediation was observed and monitored by EM, resistivity imaging measurements and laboratory tests of soil samples.},
note = {4},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
Żogała, B.; Dubiel, R.; Zuberek, W. M.; Rusin-Zogala, M.; Steininger, M.
Geoelectrical investigation of oil contaminated soils in former underground fuel base: Borne Sulinowo, NW Poland Journal Article
In: Environmental Geology, vol. 58, no. 1, pp. 1-9, 2009, ISSN: 09430105, (14).
@article{2-s2.0-67651107320,
title = {Geoelectrical investigation of oil contaminated soils in former underground fuel base: Borne Sulinowo, NW Poland},
author = { B. Żogała and R. Dubiel and W.M. Zuberek and M. Rusin-Zogala and M. Steininger},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-67651107320&doi=10.1007%2fs00254-008-1458-y&partnerID=40&md5=a8a43e3b383a3736bc87fddfc929ec9a},
doi = {10.1007/s00254-008-1458-y},
issn = {09430105},
year = {2009},
date = {2009-01-01},
journal = {Environmental Geology},
volume = {58},
number = {1},
pages = {1-9},
abstract = {The survey has been carried out in the area of 0.23 km2 of the former military underground fuel base. The oil derivative products were observed in excavations and the laboratory tests confirmed the occurrence of hydrocarbons (>C12) in soils. The purpose of the survey was to determine the spatial extent of the contamination. The studied area is covered by postglacial sediments: sands, gravels and till. The first water table was observed at a depth of 10-12 m. The detailed electromagnetic measurements with Geonics EM31-MK2 conductivity meter were performed in the whole area of the former fuel base. Obtained results were elaborated statistically and the map of apparent electrical conductivity to a depth of 6 m was created. Many local low conductivity anomalies were observed. The measurements with Geonics EM34-3XL were performed along one A-profile and 1D electromagnetic modelling along with this profile was calculated to obtain the electrical conductivity cross-section to a depth of 30 m. Two-dimensional electrical resistivity imaging measurements were carried out along the same profile and the resistivity cross-section to a depth of 20 m was performed. Both conducivity and resistivity cross-sections show anomalous zones. The zones correlate with oil contaminated zones very well. © 2008 Springer-Verlag.},
note = {14},
keywords = {},
pubstate = {published},
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}
2008
Żogała, B.; Dubiel, R.; Wandowski, J. Le; Zuberek, W. M.; Gąska, G.
Application of resistivity imaging method for investigation of geologic structure of pleistocene sediments Proceedings
vol. 5, no. 2, 2008, ISSN: 12149705, (6).
@proceedings{2-s2.0-77953739298,
title = {Application of resistivity imaging method for investigation of geologic structure of pleistocene sediments},
author = { B. Żogała and R. Dubiel and J. Le Wandowski and W.M. Zuberek and G. Gąska},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-77953739298&partnerID=40&md5=a549c3e3949017b21de92ee03f63dc8c},
issn = {12149705},
year = {2008},
date = {2008-01-01},
journal = {Acta Geodynamica et Geomaterialia},
volume = {5},
number = {2},
pages = {177-183},
abstract = {This paper presents the results of geophysical survey performed in the Pilawa River valley in the area of Middle Pomerania (Poland). The resistivity imaging method was applied. Resistivity profile measuring eight hundred metres allowed to investigate the geologic structure to the depth of 150 metres. The resistivity cross section shows the structure of Pleistocene sediments and the depth of Miocene - Pleistocene boundary. The significant lowering of the boundary is related to assumable ice-sheet margin range of Pomeranian phase of North Polish Glaciation. The lowering of the boundary may be a result of sediments compaction and the subglacial tunnel slope as well.},
note = {6},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
Cabała, J.; Żogała, B.; Dubiel, R.
Geochemical and geophysical study of historical Zn-Pb ore processing waste dump areas (Southern Poland) Journal Article
In: Polish Journal of Environmental Studies, vol. 17, no. 5, pp. 693-700, 2008, ISSN: 12301485, (46).
@article{2-s2.0-55449097795,
title = {Geochemical and geophysical study of historical Zn-Pb ore processing waste dump areas (Southern Poland)},
author = { J. Cabała and B. Żogała and R. Dubiel},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-55449097795&partnerID=40&md5=7406c8c85975663a181e81f32aec0dcd},
issn = {12301485},
year = {2008},
date = {2008-01-01},
journal = {Polish Journal of Environmental Studies},
volume = {17},
number = {5},
pages = {693-700},
abstract = {This paper presents the results of mineralogical, geochemical and geophysical studies of Zn-Pb processing waste dump stored at the turn of the 19th and 20th centuries. The mineral composition of wastes was identified using the XRD method, the contents of Zn, Pb, Fe, Mn, Cd, and Tl were determined using the AAS method, whereas the characteristic features of metalliferous grains were examined using the ESEM method. High geochemical mobility of these metals reduces plant succession and brings about the pollution of the former Zn-Pb ores mine areas. High contents of Zn-Pb-Fe sulfides and unstable, hydrated Pb, Fe, Pb-Fe sulfates result in distinctly raised levels of heavy metals (Zn 121;501 mg kg-1; Pb 208;869 mg kg-1; Cd 477 mg kg-1). Various waste types and surrounding Triassic or Quaternary deposits differ significantly in mineral composition, and consequently in physical properties such as electrical conductivity of top soil horizons. This enabled using geoelectric methods for the purpose of this study, and contouring mine wastes in the polluted areas. The field geophysical survey was carried out with a high-resolution conductivity meter (Geonics EM31-MK2).},
note = {46},
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pubstate = {published},
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}
Żogała, B.; Dubiel, R.; Robak, M.; Zuberek, W. M.; Wzientek, K.
European Association of Geoscientists and Engineers, EAGE, 2008, (2).
@proceedings{2-s2.0-85085775078,
title = {Observations of the bioremediation of oil contaminated soils - Application of EM and resistivity imaging methods},
author = { B. Żogała and R. Dubiel and M. Robak and W.M. Zuberek and K. Wzientek},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85085775078&doi=10.3997%2f2214-4609.20146259&partnerID=40&md5=2820425a8f6ddfb0ef528613a18b9a0b},
doi = {10.3997/2214-4609.20146259},
year = {2008},
date = {2008-01-01},
journal = {Near Surface 2008 - 14th European Meeting of Environmental and Engineering Geophysics},
publisher = {European Association of Geoscientists and Engineers, EAGE},
abstract = {The survey has been carried out in the area the former military underground fuel base situated in the firing ground Borne Sulinowo (NW Poland). The oil contaminations were revealed in 7 zones in the studied area. In 2003 and 2005 yeast strain Yarrowia lipolytica A-101 suspensions were introduced into shallow boreholes to intensify the bioremediation process. In succeeding seasons the bioremediation was observed and monitored using EM and resistivity imaging measurements. The study showed the significant measurable change in soil electrical properties after several months since the yeast suspension had been introduced into hydrocarbons contaminated soil. The bioremediation can be efficiently observed and monitored with geoelectrical methods such as resistivity imaging or electromagnetic induction ones.},
note = {2},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
Żogała, B.; Pierwoła, J.; Dubiel, R.; Cabała, J.
Geoelectrical survey in the area of a long-lasting Zn-Pb waste storage Proceedings
European Association of Geoscientists and Engineers, EAGE, 2008, (1).
@proceedings{2-s2.0-85085403413,
title = {Geoelectrical survey in the area of a long-lasting Zn-Pb waste storage},
author = { B. Żogała and J. Pierwoła and R. Dubiel and J. Cabała},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85085403413&doi=10.3997%2f2214-4609.20146319&partnerID=40&md5=97995c3647c27e2245659788b1f5ae63},
doi = {10.3997/2214-4609.20146319},
year = {2008},
date = {2008-01-01},
journal = {Near Surface 2008 - 14th European Meeting of Environmental and Engineering Geophysics},
publisher = {European Association of Geoscientists and Engineers, EAGE},
abstract = {This paper presents the results of geoelectrical study of the former Zn-Pb processing waste-dump situated in the Olkusz region , southern Poland. In the past two kinds of waste were stored in this place. One is the washing waste, the other consists of tailings. A certain amount of them was processed in the first half of the 20th century. At present more than ten thousand tons remain on the stockyard. The results of the chemical analysis show that the contents of metals such as Zn, Pb, Cd and Tl exceed several orders of magnitude standards established for industrial soil. Under the low pH value mobility of these elements is significant. Unfavourable geological conditions can cause the migration into the underground water. In the study area the electromagnetical method was applied to study the boundaries between waste and unpolluted soil. The resistivity method was taken to define the vertical range of waste and to identify layers lying below the waste level. Our investigation points that geoelectrical methods can be successfully used for contouring Zn-Pb waste.},
note = {1},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
2006
Dubiel, R.; Górka, A.
Focal mechanisms of mining induced seismic events: Reliability of the solutions Proceedings
vol. 29, no. 395, 2006, ISSN: 0138015X.
@proceedings{2-s2.0-34247594391,
title = {Focal mechanisms of mining induced seismic events: Reliability of the solutions},
author = { R. Dubiel and A. Górka},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-34247594391&partnerID=40&md5=f9d33d8680a36c2a5a694228ce02034f},
issn = {0138015X},
year = {2006},
date = {2006-01-01},
journal = {Publications of the Institute of Geophysics, Polish Academy of Sciences, Series M: Miscellanea},
volume = {29},
number = {395},
pages = {49-53},
abstract = {Focal mechanisms of 168 mining induced seismic events that occurred in the Halemba coal mine area (Upper Silesian Coal Basin; Poland) were determined using the seismic moment inversion method. 38 seismic events were studied in detail. For 12 tremors, non-double couple components were dominant in seismic moment tensor. Focal mechanisms of 38 tremors were repeatedly recalculated for gradually changing vertical Z coordinate values to obtain the maximum double couple seismic moment tensor component. The high value of non-shearing components in seismic moment tensor is probably a result of inaccurrate localization. The non-double couple mining induced seismic events are not so common in the USCB as previous studies suggested.},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
2005
Żogała, B.; Dubiel, R.; Zuberek, W. M.; Wzientek, K.; Rusin-Zogala, M.
Geoelectrical monitoring of the bioremediation of hydrocarbons contaminated soils Proceedings
European Association of Geoscientists and Engineers, EAGE, 2005.
@proceedings{2-s2.0-84898621295,
title = {Geoelectrical monitoring of the bioremediation of hydrocarbons contaminated soils},
author = { B. Żogała and R. Dubiel and W.M. Zuberek and K. Wzientek and M. Rusin-Zogala},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84898621295&partnerID=40&md5=347b3c9a4b653374a3d9b4d40860f231},
year = {2005},
date = {2005-01-01},
journal = {Near Surface 2005},
publisher = {European Association of Geoscientists and Engineers, EAGE},
abstract = {The paper presents the results of geoelectrical monitoring of the bioremediation of hydrocarbons contaminated soils. Yeast strain Yarrowia lipolytica A-101 suspension was introduced into one of hydrocarbons contaminated zones situated in fuel base of the former military firing ground Borne Sulinowo. The process of bioremediation was controlled using cyclical electromagnetic and resistivity imaging measurements. The increase in soil electrical conductivity and decrease in electrical resistivity were observed where the yeast suspension had been introduced.},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
Wzientek, K.; Żogała, B.; Zuberek, W. M.; Dubiel, R.; Rusin-Zogala, M.
The resistivity imaging survey of the chemical waste dumping site Proceedings
European Association of Geoscientists and Engineers, EAGE, 2005.
@proceedings{2-s2.0-84898605409,
title = {The resistivity imaging survey of the chemical waste dumping site},
author = { K. Wzientek and B. Żogała and W.M. Zuberek and R. Dubiel and M. Rusin-Zogala},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84898605409&partnerID=40&md5=ba4353fb06e280d8afbeccb44cbc0251},
year = {2005},
date = {2005-01-01},
journal = {Near Surface 2005},
publisher = {European Association of Geoscientists and Engineers, EAGE},
abstract = {The results of resistivity imaging survey of the chemical waste dumping site in Tarnowskie Gory are presented. Chemical wastes were stored in the area of the chemical plant and its surroundings for many years. Toxic elements migrated with surface water into the Quaternary and Triassic aquifers. The contaminated zone was determined using resistivity imaging survey with ABEM Lund Imaging System. The obtained resistivity cross sections clearly show the extent of the contaminated zones.},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
2004
Dubiel, R.; Ciborek, A.
Estimation of the local stress field using seismological data Proceedings
vol. 1, no. 1, 2004, ISSN: 12149705.
@proceedings{2-s2.0-77954702920,
title = {Estimation of the local stress field using seismological data},
author = { R. Dubiel and A. Ciborek},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-77954702920&partnerID=40&md5=727164e7d7967d2d2180dd94bf240593},
issn = {12149705},
year = {2004},
date = {2004-01-01},
journal = {Acta Geodynamica et Geomaterialia},
volume = {1},
number = {1},
pages = {41-45},
abstract = {Focal mechanisms of 400 mining induced seismic events were determined using seismic moment tensor inversion method. The seismic moment tensors were calculated in time domain for P-wave first arrivals. All the seismic events were induced in the vicinity of one longwall opening localised in the Halemba coal mine area (Upper Silesian Coal Basin; Poland). Assuming that the tremors occurring in the same area in short time intervals are generated by similar stress conditions, mean local stress tensors for sets of seismic events were calculated. Only shearing focal mechanism seismic events were taken into account. The stress tensors were calculated for ten succeeding seismic events. The study showed that the state of stress was very unstable in the investigated area. Variation of the local stress field manifested itself by instantaneous interchanging of the positions of main stress axes. Variations of the state of stress were probably the result of mutual interaction of lithostatic, mining and tectonic stresses.},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
2002
Dubiel, R.
Variations of the local stress field in the vicinity of Kłodnicki fault [Zmienność lokalnego pola naprȩzeń w poblizu uskoku kłodnickiego] Journal Article
In: Publications of the Institute of Geophysics, Polish Academy of Sciences, Series M: Miscellanea, vol. 24, no. 340, pp. 29-34, 2002, ISSN: 0138015X, (1).
@article{2-s2.0-18144452108,
title = {Variations of the local stress field in the vicinity of Kłodnicki fault [Zmienność lokalnego pola naprȩzeń w poblizu uskoku kłodnickiego]},
author = { R. Dubiel},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-18144452108&partnerID=40&md5=1cd5b29852dc94ecd770e5fdb54813d1},
issn = {0138015X},
year = {2002},
date = {2002-01-01},
journal = {Publications of the Institute of Geophysics, Polish Academy of Sciences, Series M: Miscellanea},
volume = {24},
number = {340},
pages = {29-34},
abstract = {The focal mechanisms of 61 seismic events were determined using the seismic moment tensor inversion method. All the tremors were induced in 150- meter zone of Kłodnicki fault in Halemba coal mine area. Dominant double couple component was noticed for majority of the tremors. On the basis of focal mechanism solutions, mean local stress tensors for groups of twenty events were calculated. The study revealed significant variations of the local stress field, manifested by interchanging of the positions of main stress axes.},
note = {1},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
2001
Żogała, B.; Dubiel, R.; Gorszczyńska, H.; Malina, R.
In: Przeglad Geofizyczny, vol. 46, no. 1-2, pp. 111-118, 2001, ISSN: 00332135, (1).
@article{2-s2.0-0035657267,
title = {Geophysical recognition of shallow bed-rock in selected area of Peȩć Stawów Polskich Valley [Próba geotechnicznego rozpoznania Płytkiego Podłoza fragmentu doliny piȩciu stawów Polskich metodami geofizycznymi]},
author = { B. Żogała and R. Dubiel and H. Gorszczyńska and R. Malina},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0035657267&partnerID=40&md5=59e44b52387e1bbc0bf31ecd56e58135},
issn = {00332135},
year = {2001},
date = {2001-01-01},
journal = {Przeglad Geofizyczny},
volume = {46},
number = {1-2},
pages = {111-118},
abstract = {In the paper are presented results of resistivity and electromagnetic measurements carried out in selected area of Piȩć Stawów Polskich Valley in the Tatra Mountains. One resistivity profiling with two arrays of current electrodes (10 m and 30 m) and five electromagnetic profilings with three antennas positions were carried out. Results were interpreted using professional software. One obtained maps of electrical conductivity and electrical profiles. Results of both methods correlate each other very well. One can ascertain that the deposits in the area are slightly compacted, relatively homogenous and to some extent hydrated.},
note = {1},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
1999
Dubiel, R.
The mean local stress tensors for Halemba coal mine area Journal Article
In: Publications of the Institute of Geophysics, Polish Academy of Sciences, Series M: Miscellanea, no. 22, pp. 19-20, 1999, ISSN: 0138015X.
@article{2-s2.0-28244450352,
title = {The mean local stress tensors for Halemba coal mine area},
author = { R. Dubiel},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-28244450352&partnerID=40&md5=eb4222636220dfab0e10034e9e9c0fc0},
issn = {0138015X},
year = {1999},
date = {1999-01-01},
journal = {Publications of the Institute of Geophysics, Polish Academy of Sciences, Series M: Miscellanea},
number = {22},
pages = {19-20},
abstract = {Focal mechanism of 543 mine tremors occurred in 1995 in Halemba coal mine area (the Upper Silesian Coal Basin, Poland) were determined using the seismic moment tensor inversion method. The DC component was dominant in mechanisms of majority of tremors. On the basis of focal mechanisms solutions, mean local stress tensors in one-month time intervals were calculated applying direct inversion method developed by Angelier (1979). The research showed that the state of stress in the investigated area was very unstable. Fast and sweeping changes of main stress axes orientations were observed. The mining put the rock mass in the state of unstability. The state manifests itself by instantaneous interchanging of the positions of maximum and minimum axes.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Dubiel, R.
The mean local stress tensors for Halemba coal mine area Proceedings
vol. 22, no. 310, 1999, ISSN: 0138015X, (2).
@proceedings{2-s2.0-0033509584,
title = {The mean local stress tensors for Halemba coal mine area},
author = { R. Dubiel},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0033509584&partnerID=40&md5=68b7357010ffd82969066d28e12a5db5},
issn = {0138015X},
year = {1999},
date = {1999-01-01},
journal = {Publications of the Institute of Geophysics, Polish Academy of Sciences, Series M: Miscellanea},
volume = {22},
number = {310},
pages = {15-20},
abstract = {Focal mechanism of 543 mine tremors occurred in 1995 in Halemba coal mine area (the Upper Silesian Coal Basin, Poland) were determined using the seismic moment tensor inversion method. The DC component was dominant in mechanisms of majority of tremors. On the basis of focal mechanisms solutions, mean local stress tensors in one-month time intervals were calculated applying direct inversion method developed by Angelier (1979). The research showed that the state of stress in the investigated area was very unstable. Fast and sweeping changes of main stress axes orientations were observed. The mining put the rock mass in the state of unstability. The state manifests itself by instantaneous interchanging of the positions of maximum and minimum axes.},
note = {2},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
1995
Żogała, B.; Zuberek, W. M.; Dubiel, R.
In: Publications - Institute of Geophysics, Polish Academy of Sciences, series, M, no. M-19(281), pp. 245-254, 1995, (2).
@article{2-s2.0-0029535438,
title = {Studies of the maximum temperature memory effect decay during seismoacoustic emission in sedimentary rocks [Badania nad zanikaniem efektu pamieci maksymalnej temperatury w przebiegu emisji sejsmoakustycznej w skalach osadowych]},
author = { B. Żogała and W.M. Zuberek and R. Dubiel},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0029535438&partnerID=40&md5=48d3de0379f6d8cd1413e6699d983838},
year = {1995},
date = {1995-01-01},
journal = {Publications - Institute of Geophysics, Polish Academy of Sciences, series, M},
number = {M-19(281)},
pages = {245-254},
abstract = {Under thermal stress, rocks undergo microfracturing, fracturing and finally fail. These processes are connected with acoustic emission. It was found that some sedimentary rocks subject to cyclical heating exhibit the effect of memory of the maximum temperature from the preceding cycle. Several tests of this effect on Carbonbiferous mudstone have been carried out. Samples were heated cyclically, in each cycle to a temperature higher than in the previous cycle. It was clearly found that acoustic emission exists and the discrete maximum temperature memory effect from the previous cycle is evident. This paper determines the influence of the heating rate on the acoustic emission level and on the value of the thermal memory coefficient (felicity ratio) which is the measure of maximum temperature memory decay. The first results suggest that the heating rate has a large influence on the acoustic emission level and thermal memory coefficient. -English summary},
note = {2},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Sagan, G.; Dubiel, R.; Mitrega, P.; Zuberek, W. M.
In: Publications - Institute of Geophysics, Polish Academy of Sciences, series M, no. M-19(281), pp. 33-45, 1995, (2).
@article{2-s2.0-0029471951,
title = {The mechanism of mining tremors related to damages observed in the stope area [Mechanizm wstrzasow gorniczych w swietle obserwacji ich skutkow w wyrobiskach]},
author = { G. Sagan and R. Dubiel and P. Mitrega and W.M. Zuberek},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0029471951&partnerID=40&md5=f4b84406fcdb8caccc6ad9ebeb001bef},
year = {1995},
date = {1995-01-01},
journal = {Publications - Institute of Geophysics, Polish Academy of Sciences, series M},
number = {M-19(281)},
pages = {33-45},
abstract = {Six mining tremors (connected with rockbursts) from the Wujek coal mine area, with energies 105-107 J, were chosen for investigation. All events caused serious and well documented damage in mining excavations and were felt on the Earth's surface. The mechanisms of these tremors were determined on the basis of digital recordings from the mining seismological network using the seismic moment tensor inversion method for P-wave first arrivals. The number of analysed events was small but it appears that tremors connected with coal rockbursts have a smaller isotropic to deviatoric ratio of the seismic moment tensor compared to mining tremors without damages observed underground. -from English summary},
note = {2},
keywords = {},
pubstate = {published},
tppubtype = {article}
}