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Título del libro: Ieee International Symposium On Industrial Electronics
Título del capítulo: Ocean Bottom Seismometer (OBS): An instrument for marine seismic data acquisition

Autores UNAM:
ERIK MOLINO MINERO RE;
Autores externos:

Idioma:
Inglés
Año de publicación:
2008
Palabras clave:

Acoustic intensity; Analog to digital conversion; Autonomous underwater vehicles; Data acquisition; Data handling; Digital to analog conversion; Frequency converters; Industrial electronics; Mergers and acquisitions; Optical switches; Power quality; Seismographs; Seismology; Signal to noise ratio; Underwater equipment; A stables; Acquisition system; Analog to digital converter; Bottom layers; Environmental conditions; Geophone; Good datums; High resolutions; Large datums; Low powers; Memory cards; Ocean Bottom Seismometer (OBS); Power consumptions; Signal-to-noise ratios; Data storage equipment


Resumen:

The OBS (Ocean Bottom Seismoemter) has been a key instrument for geophysical study of sea sub-bottom layers in the last decades. Now scientists are demanding highly relaible autonomous equipment capable of staying underwater for long periods of time and therefore handling large data storage. Power consumption of the acquisition system as well as a stable time base with temperature are the main issues in order to achieve high autonomy together with a good data quality. This paper presents a new Ocean Bottom Seismometer designed to be used in marine mid-term surveys. To achieve our goals, a new low power datalogger with high resolution and Signal-to-Noise Ratio (SNR) based on Compactflash memory card is designed to enable continous data acquisition. The equipment has been evaluated in real environmental conditions during a test cruise in 2006. © 2008 IEEE.


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