The benchmarks are leveled to a graduated employees that is also semi-permanently installed at sea amount, on which h2o stage observations are taken periodically during the station profession. By measuring time taken to bounce back, and accounting for ideal corrections, the depth in the bed at that specific level can https://hydrographicsurveyindhaka37540.mpeblog.com/57227112/the-ultimate-guide-to-hydrographic-survey-in-bangladesh