Letter: Ocean bathymetry reconstruction from surface data using hydraulics theory

TY - JOUR

T1 - Letter

T2 - Ocean bathymetry reconstruction from surface data using hydraulics theory

AU - Kar, Subhajit

AU - Guha, Anirban

N1 - This work has been partially supported by the following Grant Nos: IITK/ME/2014338, STC/ME/2016176, and ECR/2016/001493.

PY - 2018/12

Y1 - 2018/12

N2 - Here we propose a technique that successfully reconstructs ocean bathymetry from the free surface velocity and elevation data. This technique is based on the principles of open-channel hydraulics, according to which a sub-critical flow over a seamount creates a free surface dip. The proposed method recognizes that such a free surface dip contains the signature of the bottom topography, hence inverts the free surface to reconstruct the topography accurately. We applied our inversion technique on re-analysis data and reconstructed the Mediterranean Sea and the Red Sea bathymetries of 1/12° resolution with approximately 90% accuracy.

AB - Here we propose a technique that successfully reconstructs ocean bathymetry from the free surface velocity and elevation data. This technique is based on the principles of open-channel hydraulics, according to which a sub-critical flow over a seamount creates a free surface dip. The proposed method recognizes that such a free surface dip contains the signature of the bottom topography, hence inverts the free surface to reconstruct the topography accurately. We applied our inversion technique on re-analysis data and reconstructed the Mediterranean Sea and the Red Sea bathymetries of 1/12° resolution with approximately 90% accuracy.

UR - https://www.scopus.com/pages/publications/85058192013

U2 - 10.1063/1.5055944

DO - 10.1063/1.5055944

M3 - Article

AN - SCOPUS:85058192013

SN - 1070-6631

VL - 30

JO - Physics of Fluids

JF - Physics of Fluids

IS - 12

M1 - 121701

ER -