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  • 51. Solakov, D.
    et al.
    Khristoskov, L.
    Simeonova, S.
    Khristova, Ts
    Babachkova, B.
    Botev, Ye
    Dimitrov, B.
    Dineva, Savka
    Dobrev, Ch
    Donkova, K.
    Petrov, L.
    Rezultaty ot yedniy eksperiment vyrchy opredelyane na osnovnite zemetryasyy parametry chrez registratsite na NOTSSI1992Inngår i: Balgarsko Geofizicno Spisanie, Vol. 18, nr 1, s. 22-29Artikkel i tidsskrift (Fagfellevurdert)
  • 52. Solakov, D.
    et al.
    Simeonova, S.
    Dineva, Savka
    Glavcheva, R.
    Biotev, E.
    Christova, Ts
    Babachkova, B.
    Donkova, K.
    Aleksandrova, I.
    Katalog zemletryaseniy s magnitudoy M> or =3.0, kotoryye sluchilis' na territorii Bolgarii i blizhayshikh zemel' za period 1981-19901993Inngår i: Balgarsko Geofizicno Spisanie, Vol. 19, nr 4, s. 76-82Artikkel i tidsskrift (Fagfellevurdert)
  • 53.
    Stich, Daniel
    et al.
    Instituto Andaluz de Geofisica, Universidad de Granada, Observatorio de Cartuja, Granada.
    Batlló, Josep
    Departamento de Matemática Aplicada I, Universitat Politècnica de Catalunya.
    Morales, José A.
    Andaluz de Geofisica, Universidad de Granada, Observatorio de Cartuja, Granada.
    Macià, Ramon
    Departamento de Matemática Aplicada II, Universitat Politècnica de Catalunya.
    Dineva, Savka
    Source parameters of the M w = 6.1 1910 Adra earthquake (southern Spain)2003Inngår i: Geophysical Journal International, ISSN 0956-540X, E-ISSN 1365-246X, Vol. 155, nr 2, s. 539-546Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We examine and model analogue recordings from 6 early mechanical seismographs for the 1910 June 16 earthquake at Adra, Southern Spain. Modern standard, time-domain analysis techniques were applied to the historical data to estimate the source parameters of the event: The regional sparse network data were inverted for the deviatoric seismic moment tensor. The best moment tensor solution corresponds to a M o = 1.50 . 10 18 Nm, M w 6.1 oblique strike-slip event at 16 km depth. Our preferred faulting solution is: strike 122°, dip 80° rake - 137°, in very good agreement with available neo- and seismotectonic data. The source time function of this earthquake was estimated by deconvolving recordings of a M w 5.5 aftershock that occurred the same day. The time function indicates a total rupture time of 4.5 s, corresponding to estimates for mainshock rupture length of 12 km, and stress drop of 29 bar.

  • 54.
    Vaněk, J.
    et al.
    Geophysical Institute, Czechoslovak Academy of Sciences.
    Kondorskaya, N.V.
    Institute of Physics of the Earth, Academy of Sciences, the U.S.S.R.
    Fedorova, I.V.
    Institute of Physics of the Earth, Academy of Sciences, the U.S.S.R.
    Christoskov, L.
    Geophysical Institute, Bulgarian Academy of Sciences.
    Zakharova, A.I.
    Institute of Physics of the Earth, Academy of Sciences, the U.S.S.R.
    Dineva, Savka
    Nosova, O.V.
    Institute of Physics of the Earth, Academy of Sciences, the U.S.S.R.
    Kireev, I.A.
    Institute of Physics of the Earth, Academy of Sciences, the U.S.S.R.
    Chepkunas, L.S.
    Institute of Physics of the Earth, Academy of Sciences, the U.S.S.R.
    Determination of the homogeneous magnitude system magnitudes in seismological practice1985Inngår i: Tectonophysics, ISSN 0040-1951, E-ISSN 1879-3266, Vol. 118, nr 3-4, s. 359-363Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Routine determination of network magnitudes by means of the Eurasian homogeneous magnitude system (HMS) is described and tested on a selection of recent shallow earthquakes. The HMS earthquake magnitudes appear to be more accurate and more reliable than the conventional earthquake magnitudes used in the present seismological practice. A preliminary investigation of correlations between magnitudes determined from different wave types shows a possible dependence of the correlation on the type of focal mechanism of earthquakes

  • 55.
    Warema, Senzia
    et al.
    Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser.
    Nordström, Emilia
    Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geoteknologi.
    Nordlund, Erling
    Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geoteknologi.
    Dineva, Savka
    Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geoteknologi.
    Zhang, Ping
    Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geoteknologi.
    Yi, Changping
    Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geoteknologi.
    Analysis of the rock mass support damages for seismic damaging events in Kiirunavaara mineManuskript (preprint) (Annet vitenskapelig)
  • 56.
    Zhang, Ping
    et al.
    Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geoteknologi.
    Dineva, Savka
    Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geoteknologi.
    Nordlund, Erling
    Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geoteknologi.
    Hansen-Haug, Jouni
    Lundin Mining.
    Woldemedhin, Biruk
    LKAB.
    Töyrä, Jimmy
    LKAB.
    Boskovic, Mirjana
    LKAB.
    Nyström, Anders
    Boliden.
    Marklund, Per-Ivar
    Boliden.
    Mozaffari, Shahram
    Boliden.
    Establishment of experimental sites in three Swedish mines to monitor the in-situ performance of ground support systems associated with mining-induced seismicity2016Inngår i: Proceedings of the 8th International Symposium on Ground Support in Mining and Underground Construction / [ed] E . N ordlund, T.H. Jones and A. Eitzenberger (eds), 2016Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In order to assess the performance of ground support components and systems when subjected to seismic activity and strong ground motion, Luleå University of Technology together with three Swedish mining companies (Lundin Mining, LKAB and Boliden) started a three year research project in September 2014. The aim of the project is to develop new methods for evaluating the rock support performance in-situ that use all available information about i) the source of the seismic event (obtained from the seismic network in the mine and additional seismic sensors), ii) seismic loading (ground motion) recorded by temporary local seismic networks, and iii) the consequences of the seismic loading in terms of damage to the underground excavations and the rock support.The sites with high potential of seismic damage were defined after the historical damaging seismic events were reviewed and the mining-induced stress disturbance was investigated with 3D numerical models. As of 31 December 2015, four sites in three different mines have been instrumented. Geophones (in depth and at surface), multi-points extensometers and instrumented bolts were installed to monitor the ground motion, the deformation of the rock mass and the elongation of the bolts. Observation boreholes were drilled to investigate the rock lithology, structures as well as fracture distribution and development. The data from locally installed geophones will be integrated with seismic data recorded by the mine-wide network. For each monitoring point, all of the instruments and observation boreholes were located at very close area within 0.5-1 m distance from each other. These results will be used to establish the relationship between the dynamic loading and the response of rock mass and rock bolts. Additionally, laser scanning is used to measure the surface deformation of the whole volume of instrumented sites with time. Two damaging seismic events occurred near the instrumented sites after the instruments were installed and the results of site investigation show that installed instruments have captured the response of the rock mass and bolts due to production blasting and seismic events.

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