| dc.description.abstract | Accurate bathymetric data involves
mapping the depth and features of the underwater
terrain. Further, bathymetric data can be revealed by
effective
harbor
management,
navigation,
infrastructure planning, and dredging operations.
Precise bathymetry is the basis of creating reliable
nautical charts and ensuring safe navigation for
vessels. The traditional sonar surveys have essential
limitations, despite their effectiveness. Therefore,
different methods such as satellite imagery are being
used to make bathymetric data collection more
effective and cost-effective, to address the limitations
of traditional sonar surveys. In this study, at the
harbour basin in Kirinda, the most advanced remote
sensing techniques and image processing methods
were implemented to generate a wide-ranging
bathymetric map. The maps generated from remote
sensing technology made available insights into
underwater topography, sediment distribution, and
changes over time. The analysis of Landsat 8 satellite
imagery data from 2012, 2014, and 2017 was used,
and to confirm the accuracy of the satellite-derived
bathymetry, sound-derived bathymetry data from
2012, 2014, and 2017 were also combined. The
following changes in Kirinda Fishery Harbor have
been observed, which are sediment variations,
resulting in increased maintenance costs and
disruptions for harbour users, over the period from
2012 to 2017. Prevention of safe channel of the vessels
was identified as a result of siltation had led to a
reduction in the harbor basin's depth. This
information provides a better understanding of the
physical characteristics of the harbour. Furthermore,
it implies that supports decision-making processes
related to infrastructure planning and maintenance
and facilitates effective harbour management and
navigation safety. | en_US |
