@article {Bornstein2013,
	title = {{Direct temperature and salinity acoustic full waveform inversion}},
	journal = {Geophysical Research Letters},
	volume = {40},
	number = {16},
	year = {2013},
	month = {aug},
	pages = {4344{\textendash}4348},
	abstract = {Recent work has shown that Full Waveform Inversion could be suitable to extract physical properties such as sound speed (c), density ($\rho$), temperature (T), and salinity (S) from the weak impedance contrasts associated with the ocean{\textquoteright}s thermohaline fine structure.The seismic inversion approaches proposed so far are based on the iterative inversion of c from multichannel seismic data, while the rest of parameters (T,S, and $\rho$) are determined in a second step using two equations of state and a local T-S empirical relationship. In this work, we present an alternative to this approach. Using 1-D synthetic seismic data, we demonstrate that the direct full waveform inversion of T and S using adjoint methods is feasible without the use of any local T-S relationship and that the models of physical properties obtained with this approach are far more accurate than those inferred from c. Key Points T and S can be inverted simultaneously from ocean acoustic data using FWI Local T-S empirical relationships are not required for the inversion Our T and S results have a potential density error of 0.01 kg/m3. {\textcopyright} 2013. American Geophysical Union. All Rights Reserved.},
	keywords = {acoustic oceanography, adjoint method, full waveform inversion, thermohaline fine structure},
	issn = {00948276},
	doi = {10.1002/grl.50844},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84882307211\&partnerID=tZOtx3y1},
	author = {Bornstein, G. and Biescas, B. and Sallar{\`e}s, V. and Mojica, J. F.}
}
@conference {Shariat-Panahi2008,
	title = {{Design, Characterization and Calibration of a Short-Period Ocean Bottom Seismometer (OBS)}},
	booktitle = {2008 IEEE Instrumentation and Measurement Technology Conference},
	year = {2008},
	month = {may},
	pages = {495{\textendash}500},
	publisher = {IEEE},
	organization = {IEEE},
	abstract = {First part of this paper presents an Ocean Bottom Seismometers (OBS) designed and constructed for mid-term deployments in order to study the earth dynamics and internal structure. Many marine research institutes have developed such equipment, however there is no standard method for their characterization and calibration. The second part discusses the characterization tests based on the international standards carried out to present the specifications of the equipment built. Calibration of the constructed OBS is carried out through an oceanographic cruise using a widely used reference OBS. Data quality of the instruments is evaluated by direct inspection of the corresponding seismic record sections. {\textcopyright}2008 IEEE.},
	keywords = {Analog-to-digital converter, Calibration, Datalogger, Dynamic range, Effective number of bits, Geophone, Jitter, Ocean bottom seismometer (OBS), Seismic record section, Time base},
	isbn = {978-1-4244-1540-3},
	issn = {10915281},
	doi = {10.1109/IMTC.2008.4547086},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-51349130474\&partnerID=tZOtx3y1},
	author = {Shariat-Panahi, S. and M{\`a}nuel, A. and Alegria, F. and Roset, X. and Bermudez, A. and Sallar{\`e}s, V.}
}
