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oapen-20.500.12657-628162024-03-28T08:18:47Z Chapter Sea level measurements in Mediterranean coast BENINCASA, FABRIZIO De Vincenzi, Matteo Fasano, Gianni Marine Meteorological Instruments Marigraph Tide Gauge Tide Level Zero thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment Travels for geographical studies made it necessary, to establish elevations height, to refer all the heights to same surface to which to attribute the zero level, to compare results. At first sea surface was thought, but it is neither the same nor constant throughout the Earth and it varies over time. From 17th century measure protocols were proposed, but only in 19th century, using tide gauges with automatic recording, reliable measures series were obtained to establish a methodology to define tide level zero. From that moment procedures and devices improved to current satellite instruments 2023-05-01T13:45:23Z 2023-05-01T13:45:23Z 2022 chapter ONIX_20230501_9791221500301_232 9791221500301 https://library.oapen.org/handle/20.500.12657/62816 eng Monitoring of Mediterranean Coastal Areas: Problems and Measurement Techniques application/pdf Attribution-NonCommercial-ShareAlike 4.0 International chapter-36974.pdf https://books.fupress.com/doi/capitoli/979-12-215-0030-1_36 Firenze University Press 10.36253/979-12-215-0030-1.36 10.36253/979-12-215-0030-1.36 bf65d21a-78e5-4ba2-983a-dbfa90962870 9791221500301 1 15 Florence open access
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Travels for geographical studies made it necessary, to establish elevations height, to refer all the heights to same surface to which to attribute the zero level, to compare results. At first sea surface was thought, but it is neither the same nor constant throughout the Earth and it varies over time. From 17th century measure protocols were proposed, but only in 19th century, using tide gauges with automatic recording, reliable measures series were obtained to establish a methodology to define tide level zero. From that moment procedures and devices improved to current satellite instruments
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