Ding toponyms, tracks tracks of in situ depth RP101988 custom synthesis soundings dots), limits
Ding toponyms, tracks tracks of in situ depth soundings dots), limits with the shallow lagoon lagoon area along with the and 2018), which includes toponyms, of in situ depth soundings (yellow(BSJ-01-175 custom synthesis yellow dots), limits of your shallowarea (purple) (purple)limit thethe extendedextended area that contains the Sharks Fault pass (red). of limit with the region that consists of the Sharks Fault pass (red).two.2. Sentinel-2 Imagery and Pre-Processing 2.two. Sentinel-2 Imagery and Pre-ProcessingThe 10 m spatial resolution readily available for numerous bands on the MultiSpectral InstruThe 10 m spatial resolution offered for various bands with the MultiSpectral Instrument (MSI) Sentinel-2A and -2B sensors was deemed a good compromise to ment (MSI) Sentinel-2A and -2B sensors was deemed a very good compromise to capture the topography in the location with adequate precision while allowing us to collect topography on the location with adequate precision while allowing us to gather a affordable amount of calibration/validation bathymetric data in the exact same resolution. quantity of calibration/validation bathymetric information at the similar resolution. The open-data Sentinel-2 distribution strategy allows accessing numerous images, The open-data Sentinel-2 distribution approach permits accessing various pictures, which can be a considerable advantage as different images can deliver distinct which can be a considerable advantage as distinctive photos can supply distinctive qualities due to sea surface effect and glint, cloud cover or water clarity, ultimately can alter any sea surface impact and glint, cloud cover or water clarity, which ultimately can alter any algorithm performances [22]. The selection on the `best’ image must adhere to many criteria. algorithm performances [22]. The choice in the `best’ image must stick to quite a few criteria. Ideally, the image needs to be no cost of apparent sea surface sunglint and with no cloud cover. Ideally, the image should be no cost of apparent sea surface sunglint and with no cloud cover. Furthermore, the end of high tide at the time of acquisition and low precipitation the days Furthermore, the end of high tide in the time of acquisition and low precipitation the days ahead of the acquisition usually mean far better water clarity and transparency for this region. before the acquisition frequently imply greater water clarity and transparency for this area. The Sentinel-2A level 1-C image selected for this study (S2A_MSIL1C_20180305T230901) The Sentinel-2A level 1-C image chosen for this study (S2A_MSIL1C_20180305T230901) was captured on five March 2018, having a tide level of 1.31 m. Without any apparent glint in the lagoon that could have required some radiometric corrections [46], the image has been judged of sufficient high-quality.Remote Sens. 2021, 13,5 ofFollowing the same philosophy than Kerr and Purkis [25], the 5 most waterpenetrating spectral bands were considered (Table 1).Table 1. Sentinel-2 spectral and spatial characteristics. Band Name Extra (shorter) Blue Blue Green Red Extra (longer) Red Central Wavelength (nm) 443.9 496.6 560.0 664.5 703.0 Spectral Bandwidth (nm) 27 98 45 38 19 Spatial Resolution (m) 60 10 ten 10The land and couple of clouds were masked by thresholding the near-infrared band. Cloud cover was less than 1.5 with residual cloud shadows far away from the study site. The shorter blue and longer red bands (Table 1) had been resampled (nearest-neighbor strategy) at a spatial ground resolution of 10 m to match the higher spatial resolution of your other bands. The image was atmospherically corrected usi.