Editing Tide gauge (section)

{{short description|Device for measuring the change in sea level relative to a datum}}
[[File:Tidal gauge dsc06189.jpg|thumb|right|A tide gauge]]
[[File:Kronstadt tide gauge.JPG|thumb|right|The tide gauge in [[Kronstadt]], Russia<ref>{{cite web |title=The Kronstadt sea-gauge |website=Your Guide in St Petersburg |url=http://www.visit-saint-petersburg.ru/sea-gauge/ |access-date=26 April 2019}} With explanatory diagram showing Lea-type float gauge and stilling-well.</ref>]]

A '''tide gauge''' is a device for measuring the change in [[sea level]] relative to a [[vertical datum]].<ref>{{Cite journal |last1=Iliffe |first1=J. C. |last2=Ziebart |first2=M. K. |last3=Turner |first3=J. F. |date=2007 |title=A New Methodology for Incorporating Tide Gauge Data in Sea Surface Topography Models |url=https://www.tandfonline.com/doi/full/10.1080/01490410701568384 |journal=Marine Geodesy |language=en |volume=30 |issue=4 |pages=271–296 |doi=10.1080/01490410701568384 |bibcode=2007MarGe..30..271I |issn=0149-0419 |access-date=27 July 2024|url-access=subscription }}</ref><ref>{{Cite journal |last=Mitchum |first=Gary T. |date=2000 |title=An Improved Calibration of Satellite Altimetric Heights Using Tide Gauge Sea Levels with Adjustment for Land Motion |url=http://www.tandfonline.com/doi/abs/10.1080/01490410050128591 |journal=Marine Geodesy |language=en |volume=23 |issue=3 |pages=145–166 |doi=10.1080/01490410050128591 |bibcode=2000MarGe..23..145M |issn=0149-0419 |access-date=27 July 2024|url-access=subscription }}</ref> It is also known as a '''mareograph''',<ref name="Torge2012">{{cite book | last1=Torge | first1=W. | last2=Müller | first2=J. | title=Geodesy | publisher=De Gruyter | series=De Gruyter Textbook | year=2012 | isbn=978-3-11-025000-8 | url=https://books.google.com/books?id=RcfmBQAAQBAJ | access-date=2021-12-08 | page=80}}</ref> '''marigraph''',<ref>{{cite web |url=http://itic.ioc-unesco.org/index.php?option=com_content&view=article&id=1023:9&catid=1142&Itemid=2433 |title=4. Tide, Mareograph, Sea Level |author=International Tsunami Information Center |publisher=[[UNESCO]] |access-date=2014-06-16 |archive-date=2018-07-24 |archive-url=https://web.archive.org/web/20180724032123/http://itic.ioc-unesco.org/index.php?option=com_content&view=article&id=1023:9&catid=1142&Itemid=2433 |url-status=dead }}</ref> and '''sea-level recorder'''.<ref>{{cite book |title=Handbook of Sea-Level Research |editor1=Ian Shennan |editor2=Antony J. Long |editor3=Benjamin P. Horton |url=https://books.google.com/books?id=ErbEBgAAQBAJ&pg=PA557|year=2015|publisher=Wiley|isbn=978-1-118-45257-8|page=557}}</ref>
When applied to [[freshwater]] continental [[water body|water bodies]], the instrument may also be called a '''limnimeter'''.<ref name="Merriam-Webster 2022">{{cite web | title=Definition of LIMNIMETER | website=Merriam-Webster | date=2022-10-07 | url=https://www.merriam-webster.com/dictionary/limnimeter | access-date=2022-10-07}}</ref><ref>{{Cite web|title=Definition of LIMNIMETER|url=https://www.merriam-webster.com/dictionary/limnimeter|access-date=2021-08-14|website=www.merriam-webster.com|language=en}}</ref>