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  Passive and active seismic surveys for site investigation in Bucharest using seismographs dense array: preliminary results

Tolea, A., Grecu, B., Tataru, D., Zaharia, B., Necula, E., Tiganescu, A., Neagoe, C., Nastase, E. I., Dinescu, R. (2023): Passive and active seismic surveys for site investigation in Bucharest using seismographs dense array: preliminary results, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4008

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Item Permalink: https://gfzpublic.gfz.de/pubman/item/item_5019835 Version Permalink: https://gfzpublic.gfz.de/pubman/item/item_5019835_2
Genre: Conference Paper

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 Creators:
Tolea, Andreea1, Author
Grecu, Bogdan1, Author
Tataru, Dragos1, Author
Zaharia, Bogdan1, Author
Necula, Eduard1, Author
Tiganescu, Alexandru1, Author
Neagoe, Cristian1, Author
Nastase, Eduard Ilie1, Author
Dinescu, Raluca1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: This work presents a preliminary study focused on a site characterization conducted in the Bucharest area using a dense temporary seismic array. The aim is to obtain a more in-depth understanding of the subsurface velocity structure at the location of a seismic station that is a part of the Romanian Seismic Network (RSN), and located in the wider central region of Bucharest, at Cutitul de Argint. The seismic data were collected using 15 newly released Atom-3C wireless seismographs. The Atom-3C seismograph is a turnkey solution for assessing subsurface conditions, much quicker than traditional land seismic surveys, requiring no spread cables. It has separate acquisition units with 24-bit A/D conversion, GPS-controlled timing, 4 GB of internal data storage, a configurable sample rate and batteries that can last up to 70 hours before they need to be recharged. The seismic surveys were performed adopting different array geometries, such as an L-shaped array for microtremor array measurements (MAM) and a linear array for multichannel analysis of surface waves (MASW). We show some preliminary results in terms of the shear wave velocity (Vs) structure for each active and passive survey, and for the combination of active and passive survey data along the linear configuration of the array.

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Language(s): eng - English
 Dates: 2023
 Publication Status: Finally published
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.57757/IUGG23-4008
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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
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Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
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