DSpace Community:https://openlibrary.ge/handle/123456789/89542026-04-06T14:54:58Z2026-04-06T14:54:58ZArchitectural History of the Tbilisi Geophysical ObservatoryMania, M.https://openlibrary.ge/handle/123456789/107972025-12-07T03:00:42Z2025-01-01T00:00:00ZTitle: Architectural History of the Tbilisi Geophysical Observatory
Authors: Mania, M.
Abstract: The article deals with the history of the foundation and development of the 19th century Tbilisi MagneticMeteorological Observatories, with a focus on the so-called Kukia observatory. Built between 1859 and 1861, it was the first building to be designed as an observatory not only in Tbilisi but also in the Caucasus. The article also traces the history of the successors of Tbilisi Magnetic-Meteorological Observatory: Karsani and Dusheti. The paper pays tribute to the medieval observatory of Tbilisi: Shahistakhti2025-01-01T00:00:00ZDynamics of the Aftershock Zone of the 1988 Spitak Earthquake Based on 35 Years of DataNazaretyan, S. N.Mirzoyan, L. B.Kazarian, A. A.Mazmanyan, L.V.https://openlibrary.ge/handle/123456789/107962025-12-07T03:00:43Z2025-01-01T00:00:00ZTitle: Dynamics of the Aftershock Zone of the 1988 Spitak Earthquake Based on 35 Years of Data
Authors: Nazaretyan, S. N.; Mirzoyan, L. B.; Kazarian, A. A.; Mazmanyan, L.V.
Abstract: The features of aftershock manifestations of the 1988 Spitak earthquake have been studied in sufficient detail, but based on data for the first 2-3 years. The aftershock process is divided into highly active (1988-1991) and weakly active (1992 – present) periods. The overwhelming majority of 14,000 aftershocks (95%) and the predominant part of their energy (98%) were released during the active period. During the weakly active period, relative activation is observed in all the identified segments. Against the general background of attenuation of the number and strength of aftershocks, no patterns in their manifestation are observed2025-01-01T00:00:00ZAssessment of the consequences of a destructive earthquake and the needs for rapid response forces (by the example of Armenia)Nazaretyan, S. N.Igityan, H. A.Hakobyan, H. P.Bakunts, S. H.https://openlibrary.ge/handle/123456789/107952025-12-07T03:00:42Z2025-01-01T00:00:00ZTitle: Assessment of the consequences of a destructive earthquake and the needs for rapid response forces (by the example of Armenia)
Authors: Nazaretyan, S. N.; Igityan, H. A.; Hakobyan, H. P.; Bakunts, S. H.
Abstract: In case of a seismic disaster occurring in a developing country, it is very important to determine promptly the number of possible victims and need for rescue forces to estimate the scope of required international assistance and to plan operations of rapid response forces. Rates of the seismic vulnerability of buildings, readiness of the rapid response forces, and other factors, differ from country to country and determine each country’s individual capacities and effectiveness in responding to a disaster. Using the example of Armenia, general approaches are proposed for assessing losses and needs for rescue forces.2025-01-01T00:00:00ZFrom Initial Design to Present Standards: Seismic Sources and Catalogues for the Enguri DamTsereteli, N.Varazanashvili, O.Khvedelidze, I.Kupradze, M.https://openlibrary.ge/handle/123456789/107942025-12-07T03:00:41Z2025-01-01T00:00:00ZTitle: From Initial Design to Present Standards: Seismic Sources and Catalogues for the Enguri Dam
Authors: Tsereteli, N.; Varazanashvili, O.; Khvedelidze, I.; Kupradze, M.
Abstract: The Enguri High Dam, the highest arch dam in Europe and one of the tallest worldwide (271.5 m), was originally designed in the 20th century for a seismic input corresponding to PGA up to 0.56 g. However, recent probabilistic seismic hazard models developed within the GEM–EMME frameworks suggest higher ground motions, with PGA values approaching 0.9 g [1-2,3]. This discrepancy raises critical questions regarding the robustness of the existing hazard assessments and the seismic safety of the dam.
To address this issue, we initiated a comprehensive investigation combining local and regional seismic data. Spatial clustering of microseismicity allowed us to identify active faults[4]. At the regional scale, we compiled a new unified Georgian earthquake catalogue by merging and harmonizing recently published datasets [5-6]. For consistency, we also evaluated the completeness and derived Gutenberg–Richter parameters for three independent catalogues: new national catalogue, the EMME dataset, and the GEM-ISC compilation. The comparison highlights both commonalities and discrepancies in seismicity rates and recurrence characteristics, which are crucial for subsequent hazard modeling.While the current study focuses on catalogue development, source characterization, and preliminary seismotectonic insights, the next step will be a probabilistic seismic hazard assessment that integrates the refined catalogues and updated source models.2025-01-01T00:00:00Z