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Bogdan Grecu

9 linked publication records · Institutul National de Cercetare si Dezvoltare pentru Fizica Pamantului

Author: Bogdan Grecuclear all
Showing 1-9 of 9 records
1
SWS 2026 Conference Preprints
Publication

EARLY OBSERVATIONS FROM MULTI-METHOD MONITORING OF GROUND INSTABILITY IN A SALT-KARST URBAN AREA

(STEF92 Technology, 2026, Dragos Tataru, Eduard Nastase, Bogdan Grecu, Alexandru Tiganescu, Alexandra Gerea)

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Urban areas built above salt deposits are especially vulnerable to ground instability caused by dissolution, suffosion, and human activities. Monitoring these environments is difficult due to the complex subsurface structures and dense infrastructure constraints. Understanding the dynamics of these processes requires combining multiple investigation and monitoring methods to capture both underground conditions and surface movements. This paper shares initial findings from an ongoing multi-method monitoring project...

Applied and Environmental Geophysics2026
SGEM International Multidisciplinary Scientific GeoConference- EXPO Proceedings; 22nd SGEM International Multidisciplinary Scientific GeoConference Proceedings 2022
Publication

FACILITATING GEOSCIENCE EDUCATION THROUGH INTEGRATED EARTH SCIENCE THEMATIC SERVICES PLATFORM

(STEF92 Technology, 2022-11-15, Dragoş Tătaru, Eduard Nastase, Dragoş Toma-Danilă, Bogdan Grecu, Alexandru Țigănescu)

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The global development of society requires constant updating of the objectives that education pursues and how they are achieved. Science education is an area undergoing advanced transformation, both at the level of objectives and methodologies, with a strong social, economic, and knowledge impact. Research-based education is a well-established term, especially in the higher education system. More studies and key policy documents argue that education must be based on cutting-edge research. Essential in this equatio...

Ecology and Environmental Protection2022
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Science and Technologies in Geology, Exploration and Mining
Publication

ASSESSING THE CRUSTAL MODELS AND GEODYNAMICS BEHAVIOR IN WESTERN PART OF ROMANIA

(STEF92 Technology, 2017-06-20, Andrei Bala, Drd. Dragos Toma-Danila, Bogdan Grecu, Dragos Tataru)

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First results about crustal models were obtained from various geophysical and seismological methods applied in Romania in the last part of XX century. A thorough interpretation of these data lead to the first partial models of crustal structure in the western part of Romania. In the first years after 2000 two regional seismic refraction lines were performed within a close cooperation with German partners from University of Karlsruhe. One of these lines is Vrancea 2001, with 420 km in length, almost half of the eve...

Ecology and Environmental Protection2017
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Science and Technologies in Geology, Exploration and Mining
Publication

FOCAL MECHANISM AND SOURCE DIRECTIVITY FOR VRANCEA INTERMEDIATE DEPTH EARTHQUAKES

(STEF92 Technology, 2017-06-20, Cristian Neagoe, Bogdan Grecu, Mircea Radulian)

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The focal mechanism and rupture directivity for intermediate-depth earthquakes occurred in the Vrancea source (Romania) are determined using FMNEAR algorithm [1]. The method is based on the waveform inversion of near-source seismic waveforms and on a linear finite source model. When the FMNEAR algorithm is started the first parameters that are determined are the moment magnitude (Mw), the double couple focal mechanism (strike, dip, rake) and the distribution of seismic moment along strike. This provides a first or...

Ecology and Environmental Protection2017
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Science and Technologies in Geology, Exploration and Mining
Publication

GEOTECTONIC SETTING OF SOME SEISMOLOGICAL OBSERVATORIES FROM THE EASTERN PART OF ROMANIA

(STEF92 Technology, 2017-06-20, E. G. Constantinescu, Mihail Diaconescu, Bogdan Grecu)

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This paper presents a basic description of the geological and tectonic setting of the areas of placement of four seismological observatories located in the eastern part of Romania. The four seismological observatories are MLR пїЅ Red Mountain Seismologic Observatory, NEHR пїЅ Nehoiu Mountain Seismological Observatory, ODBI пїЅ Odobesti Seismological Observatory and VRI пїЅ Vrancioaia Seismological Observatory. This observatories were chose because of their importance and proximity to the seismic active Vrancea reg...

Ecology and Environmental Protection2017
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Science and Technologies in Geology, Exploration and Mining
Publication

IMPROVING REAL-TIME DETECTION AND LOCATION OF LOCAL SEISMIC EVENTS IN ROMANIA

(STEF92 Technology, 2017-06-20, Cristian Neagoe, Bogdan Grecu, Liviu Manea)

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National Institute for Earth Physics (NIEP) has started the development of its own realtime seismic network since 2002. The network is designed to monitor the seismic activity on Romania territory, which is dominated by intermediate earthquake from the Vrancea area. In present the network consist of 115 seismic stations and two seismic array. The seismic stations are equipped with Quanterra Q330 or Basalt digitizers, broad-band seismometers (STS2, CMG40T, CMG 3ESP, CMG3T, PBB-200s) or shortperiod sensors (MARK L4C...

Ecology and Environmental Protection2017
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Science and Technologies in Geology, Exploration and Mining
Publication

NEW SEISMIC NOISE MODEL FOR ROMANIA

(STEF92 Technology, 2017-06-20, Bogdan Grecu, Cristian Neagoe, Raluca Partheniu, Eduard Nastase, Bogdan Zaharia)

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In this paper, we analyze almost ten years of continuous recordings (November 2007пїЅ April 2017) from 114 stations of the Romanian Seismic Network using the power spectral densities and their corresponding probability density functions (PSD PDF). For each vertical station component, we compute the statistical mode for noise levels from the PSD PDFs. The noise mode represents the highest probability noise level for a given station. We then construct the PSD PDF mode low-noise model for Romania (RONM) from the mini...

Ecology and Environmental Protection2017
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Science and Technologies in Geology, Exploration and Mining
Publication

ROMANIAN SEISMIC NETWORK: FROM EARTHQUAKE MONITORING TO ITS ROLE IN DECISION MAKING

(STEF92 Technology, 2017-06-20, Bogdan Grecu, Dragos Toma-Danila, Dragos Tataru, Constantin Ionescu, Anton Danet)

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Earthquakes represent a real threat in Romania. They can cause important damages, loss of lives, socio-economic as well as cultural losses. The National Institute for Earth Physics (NIEP) is the only governmental organization responsible for monitoring the seismic activity on RomaniaпїЅs territory. NIEP provides different kind of information minutes to hours after the occurrence of a significant earthquake in Romania: near realtime information (location, depth and magnitude), ground shaking parameters and maps wit...

Ecology and Environmental Protection2017
Showing 1-9 of 9 records
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