Publication Date:
2017-04-04
Description:
Sea level oscillations are the superposition of many contributions. In particular, tide is a sea level up-down water motion basically
depending on three different phenomena: the Earth-Moon-Sun gravitational relationship, the water surface fluid reaction to
atmospheric meteorological dynamic, and the Newtonian vertical adjustment of the sea surface due to atmospheric pressure
variations. The first tide component (astrotide) is periodic and well known in all points of the Earth surface; the second one is
directly related to the meteorological phenomenon, and then it is foreseeable; the Newtonian component, on the contrary, is not
readily predictable by a general hydrostatic law, because the 𝐽 factor that represents the Newtonian transfer (from the atmospheric
weight to the consequent sea level) is variable in each harbor area.The analysis of the gravity field permits to forecast the sea level
variation due to meteorological tide events, and itsmetrological analysis highlights a compensation in the inverse hydrobarometric
factor to be taken into account to correctly compensate atmospheric pressure variations in semibinding basins. This phenomenon
has several consequences in HarborWaterside management and in water quality control as shown by the reported case studies and
introduces a new reference parameter: the so-calledWater 1000.
Description:
Published
Description:
ID 398956
Description:
6A. Monitoraggio ambientale, sicurezza e territorio
Description:
N/A or not JCR
Description:
restricted
Keywords:
meteorological tide waves, Newtonian sea level compensation, tide forecasting, environmental harbours quality
;
03. Hydrosphere::03.01. General::03.01.02. Equatorial and regional oceanography
;
03. Hydrosphere::03.01. General::03.01.04. Ocean data assimilation and reanalysis
;
03. Hydrosphere::03.01. General::03.01.08. Instruments and techniques
;
05. General::05.01. Computational geophysics::05.01.01. Data processing
;
05. General::05.01. Computational geophysics::05.01.05. Algorithms and implementation
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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