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Simple multiplexing scheme for a fiber-optic grating sensor network
No full textA new approach for the interrogation of a large number of fiber-optic grating sensors is proposed and demonstrated for a small number of sensors in which signal recovery is achieved by matching a receiving grating to its corresponding sensor. This technique is demonstrated for both quasi-static and periodic measurands, and the resolution achieved for a single sensor–receiving grating pair for quasi-static strain is 4.12 μ∊.info:eu-repo/semantics/publishedVersio
Presentation of the Methodology Elaborated for Optical Analyses of Borehole Samples for Oil Prospection
No full textOptical Morphology of Hydrocarbons and Oil Progenitors in Sedimentary Rocks- Relations with Geochemical Parameters
No full textThe objective of the present research..
Raft tectonics in the Kwanza Basin, Angola
No full textRaft tectonics (tectonique en radeaux) allows the extreme thin-skinned extension of overburden over a dêcollement of thin salt or other evaporites
Large range coherence tuned fiber optic interferometric system for application in accelerometers
No full textA low coherence interferometric system with large tracking range and self‐initialization to be used for remote signal processing of fiber optic accelerometers is investigated. The tracking range of the low coherence system is 1.1 mm at low frequency. Phase resolution better than 1 mrad/√Hz at frequencies below 600 Hz is obtained, with a dynamic range of ≊90 dB. Data are presented which show that if the system were used to process the output from a compliant cylinder‐type accelerometer, resolutions of ∼10−7 g/√Hz could be achieved.info:eu-repo/semantics/publishedVersio
Allochthonous salt, structure and stratigraphy of the north-eastern Gulf of Mexico. Part II: Structure
No full textThe Kinematic evolution of allochthonous salt in the north-eastern Gulf of Mexico proceeds in three stages. (1) Since the Middle Jurassic deposition, the Louann Salt was loaded by sediments causing episodic basinwartd movement of the salt, ultimately leading to large concentrations of salt masses in a slope environment by the end of the Lower Cretaceous. (2) A regime of starved sedimentation during Late Cretaceous and Early Oligocene is responsible for the stabilization of these early salt accumulations. (3) With renewed rapid accumulation of sediments, during the Neogene and pliocene, extensive allochthonous salt tongues and shetts formed by gravity spreading within the younger sediments of the slope. Autochthonous salt,allochthonous salt and detached allochthonous salt are typical stages of evolution. Major down to the basin growth faults separate allochthonous salt sheets from their original feeder stocks. Extension along down to the basin master growth faults in compensated mainly by salt withdrawal and partly by basinward shortening
Allochthonous salt, structure and stratigraphy of the north-eastern Gulf of Mexico. Part I: Stratigraphy
No full textMajor sequences boundaries associated with eustatic sea level changes are correlated to the general stratigraphy of the north-eastern Gulf of Mexico
