River Cross-Section Addition from the Google Earth Engine in Downstream of the Ba River

Abstract

Riverbed depth is the main and essential data to conduct hydrodynamic modeling research. Typically, riverbed topography data is collected directly from cross-sections arranged along the river at relatively distant intervals. This paper presents the results of applying Google Earth Engine technology and high-resolution Sentinel 2 remote sensing images combined with digital elevation model data and field-measured cross-sections to supplement the cross-sections of the downstream Ba River. The reliability of the cross-sections obtained using this technology has been verified against actual measurements at several locations on the mainstream of the Ba River. The research results indicate that most of the interpolated cross-sections are consistent with the actual measured data.