Applying double-difference methods for fine-scale acoustic tracking using a short aperture vertical array

Copernicus Sentinel-3 Surface Topography Mission embarks a two-channel microwave radiometer combined with the altimeter in order to correct the altimeter range for the excess path delay resulting from the presence of water vapour in the troposphere. The in-flight calibration of a single instrument is the critical point to achieve the expected performances. In the context of a constellation, the inter-calibration is even more important. After a presentation of the instrument design, we present the diagnoses used for the calibration of Sentinel-3A, using vicarious calibration over specific areas and double difference methods. The inter-calibration of Sentinel-3B with Sentinel-3A is performed during the tandem phase, using the residual differences of co-located measurements. Finally performances are assessed at crossover points with two parameters, first the wet troposphere correction by comparison with Jason-3; secondly on the Sea Surface Height by difference of variance. Analysis results have shown that Sentinel-3A is well calibrated, consistent with other instruments, and that Sentinel-3B is calibrated within 0.4 K with Sentinel-3A as a reference. Performances and stability fulfill the requirements for both missions.

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Fine-scale Relocation of Aftershocks of the 22 February Mw 6.2 Christchurch Earthquake using Double-difference Tomography

Seismological Research Letters ◽

10.1785/gssrl.82.6.839 ◽

2011 ◽

Vol 82 (6) ◽

pp. 839-845 ◽

Cited By ~ 21

Author(s):

S. Bannister ◽

B. Fry ◽

M. Reyners ◽

J. Ristau ◽

H. Zhang

Keyword(s):

Double Difference ◽

Fine Scale

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Behavior of gray triggerfish Balistes capriscus around baited fish traps determined from fine-scale acoustic tracking

Marine Ecology Progress Series ◽

10.3354/meps12780 ◽

2018 ◽

Vol 606 ◽

pp. 133-150 ◽

Cited By ~ 6

Author(s):

NM Bacheler ◽

KW Shertzer ◽

JA Buckel ◽

PJ Rudershausen ◽

BJ Runde

Keyword(s):

Fine Scale ◽

Acoustic Tracking ◽

Balistes Capriscus ◽

Fish Traps ◽

Gray Triggerfish

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Effect of current and daylight variations on small-pelagic fish aggregations (Selar crumenophthalmus) around a coastal fish aggregating device studied by fine-scale acoustic tracking

Aquatic Living Resources ◽

10.1051/alr/2012025 ◽

2012 ◽

Vol 26 (1) ◽

pp. 63-68 ◽

Cited By ~ 7

Author(s):

Manuela Capello ◽

Marc Soria ◽

Gael Potin ◽

Pascal Cotel ◽

Laurent Dagorn

Keyword(s):

Pelagic Fish ◽

Fine Scale ◽

Small Pelagic Fish ◽

Acoustic Tracking ◽

Coastal Fish

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Home range and residency of Scorpaena porcus and Scorpaena scrofa in artificial reefs revealed by fine-scale acoustic tracking

Fisheries Research ◽

10.1016/j.fishres.2018.10.008 ◽

2019 ◽

Vol 210 ◽

pp. 22-30 ◽

Cited By ~ 2

Author(s):

Aytaç Özgül ◽

Altan Lök ◽

T. Tansel Tanrıkul ◽

Josep Alós

Keyword(s):

Home Range ◽

Artificial Reefs ◽

Fine Scale ◽

Acoustic Tracking ◽

Scorpaena Scrofa ◽

Scorpaena Porcus

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Large-scale relocation of two decades of Northern California seismicity using cross-correlation and double-difference methods

Journal of Geophysical Research Atmospheres ◽

10.1029/2007jb005479 ◽

2008 ◽

Vol 113 (B8) ◽

Cited By ~ 192

Author(s):

Felix Waldhauser ◽

David P. Schaff

Keyword(s):

Large Scale ◽

Cross Correlation ◽

Double Difference ◽

Northern California ◽

Difference Methods

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High Resolution Stereography of Complementary Freeze-Fracture Replicas Reveals the Presence of Depressions Opposite Membrane Associated Particles of Split Membranes

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100066267 ◽

1971 ◽

Vol 29 ◽

pp. 442-443

Author(s):

Russell L. Steere

Keyword(s):

High Resolution ◽

Cardiac Muscle ◽

Electron Micrographs ◽

Chromic Acid ◽

Freeze Fracture ◽

Distilled Water ◽

Fine Scale ◽

Acid Cleaning ◽

Cleaning Solution

Complementary replicas have revealed the fact that the two common faces observed in electron micrographs of freeze-fracture and freeze-etch specimens are complementary to each other and are thus the new faces of a split membrane rather than the original inner and outer surfaces (1, 2 and personal observations). The big question raised by published electron micrographs is why do we not see depressions in the complementary face opposite membrane-associated particles? Reports have appeared indicating that some depressions do appear but complementarity on such a fine scale has yet to be shown.Dog cardiac muscle was perfused with glutaraldehyde, washed in distilled water, then transferred to 30% glycerol (material furnished by Dr. Joaquim Sommer, Duke Univ., and VA Hospital, Durham, N.C.). Small strips were freeze-fractured in a Denton Vacuum DFE-2 Freeze-Etch Unit with complementary replica tooling. Replicas were cleaned in chromic acid cleaning solution, then washed in 4 changes of distilled water and mounted on opposite sides of the center wire of a Formvar-coated grid.

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