A new generation of multichannel seismic apparatus and its practical application in standalone and array monitoring

Title:

A new generation of multichannel seismic apparatus and its practical application in standalone and array monitoring

Creator:

Brož, milan and Štrunc, Jaroslav

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:8b946077-e623-46ca-a41c-4fdc6b83f249
uuid:8b946077-e623-46ca-a41c-4fdc6b83f249
issn:1214-9705

Subject:

Geologie. Meteorologie. Klimatologie, seizmicita, seismicity, building, analog-to-digital converter, seismic array, weak event, monitoring network, 7, and 551

Type:

article, články, model:article, and TEXT

Format:

print, bez média, and svazek

Description:

A quantitatively new analog-to-digital converter (ADC) module has been developed during 2010, in co-operation with Tedia Ltd. The module has a 28-bit final resolution and uses 32-bit arithmetic. There are two versions, with four and twelve analog inputs. The 4-input module replaces the original 21-bit version, produced until 2009. The 12-input module is intended to be deployed in small-aperture seismic arrays. The whole set consists of four 3-channel detached modules that can be interconnected with the main module using a cable of up to 100 m in length. This design increases signal-to-noise ratio (SNR) by placing the A/D part as close to the seismograph as possible in order to transmit digital data for storage. All channels are sampled coherently so that all four sensors are automatically synchronised. It allows the detection of local events even though the sync-signal is absent. In other words, the 12-input module is suitable for ad-hoc field measurements even in places where there is no GPS signal. All arrays operated by the Institute of Rock Structure and Mechanics (IRSM) are going to be upgraded to use these modules and some new sites will also be set-up with this innovative equipment (e.g. Lazy in Western Bohemia and Dobrá Voda in Slovakia)., Milan Brož and Jaroslav Štrunc., and Obsahuje bibliografii

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Source:

Acta geodynamica et geomaterialia : | 2011 Volume:8 | Number:3 (163)

Harvested from:

CDK

Metadata only:

false