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Seafloor geodesy from repeated sidescan sonar surveys

We measure simulated seafloor displacement using repeated sidescan sonar surveys. From a platform height of 3–4 km and a ship speed of 0.5–3.5 knots, we are able to measure displacements accurate to tens of meters in the along-track (azimuth) direction and meters in the across-track (range) direction, an improvement over the previous Fujiwara et al. [2011] study of approximately 1 order of magnitude.

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