Die bou van die Saldanha-hawe is die rede vir die groot veranderings in die diepte van Saldanhabaai, wat die laaste paar dekades waargeneem is.<\/p>\n\n\n\n
Nuwe navorsing deur die fakulteit krygskunde van die Universiteit Stellenbosch, wat in Augustus in die Suid-Afrikaanse Tydskrif vir Geomatika <\/i>gepubliseer is, het die veranderings (batimetrie) tussen 1977 en 2021 \u2013 oor \u2019n tydperk van 44 jaar \u2013 in die baai ontleed. <\/p>\n\n\n\n
Die diepte en sedimentdinamika van die baai oor verskillende tydperke is aan die hand van oppervlakmodelle vergelyk. <\/p>\n\n\n\n
Die uitslag van die navorsing dui op \u2019n algemene toename in diepte sedert 1977 van tussen 0,395- en 3,203 m, en \u2019n gemiddelde toename in diepte binne Grootbaai van 1,799 meter. <\/p>\n\n\n\n
Tussen 1977 en 2021 is \u2019n algehele volumeverlies van 49 364 560,0 m\u00b3 sediment bereken \u2013 \u2019n aanduiding van hoe die sedimentasieproses in Saldanhabaai n\u00e1 die bou van die hawe verander het.<\/p>\n\n\n\n
Die presiese aard en dryfkrag agter hierdie verlies aan volume en waar hierdie sedimente gedeponeer is, vereis nog nadere ondersoek.<\/p>\n\n\n\n
In die gevolgtrekkings- en aanbevelings-gedeelte van die navorsingsverslag word bevestig die bou van die Saldanha-hawe was wel een van die groot oorsake van diepte- en sedimentveranderings in die baai oor die afgelope vier dekades.<\/p>\n\n\n\n
Volgens die verslag sal dit interessant wees om verdere navorsing te doen om te bepaal of hierdie veranderings moontlik die erosie wat die meeste van Langebaan se strande be\u00efnvloed, sowel as die toeslik van sekere gedeeltes, veroorsaak of versnel het. <\/p>\n\n\n\n
Destyds het die Saldanhabaai-munisipaliteit noodsaaklike keerwalle opgerig om die wegkalwe van die Langebaan-strandfront te probeer verminder en die afsakking van seesand te verhoog.<\/p>\n\n\n\n
\u201cHierdie studie was beperk tot die omvang van \u2019n opname wat in 2021 gedoen is. \u2019n Volledige opname van Saldanhabaai is nodig om \u2019n volle begrip te kry van die batimetrie van Saldanhabaai sedert die konstruksie van die hawe,\u201d lui \u2019n deel uit die verslag. <\/p>\n\n\n\n
\u201cHieruit is dit belangrik om navorsing te kan doen wat ons begrip van hierdie veranderings sal kan verbeter.\u201d <\/p>\n\n\n\n
Die Saldanhabaai- watergehalteforum-trust (SBWQFT) het die navorsingsverslag op sy webtuiste gepubliseer aangesien dit inligting is wat die gesondheid van die baai raak.<\/p>\n\n\n\n
Die SBWQFT is \u2019n vrywilliger\u00adorganisasie wat sedert 1996 fokus op die monitering van Saldanhabaai en die Langebaan-strandmeer se watergehalte en ekostelsel-veranderings weens snelle nywerheidsontwikkeling en menslike aktiwiteite.<\/p>\n\n\n\n
SBWQFT hou elke jaar in Oktober of November \u2019n ope dag waar die baai se jaarlikse watergehalteverslag voorgel\u00ea en bespreek word. Vanjaar se ope dag vind op 4 November in die Athene-konferensiesaal by die Club Mykonos-vakansieoord plaas.<\/p>\n\n\n\n
Besoek www.sbwqft.org.za om meer uit te vind oor die ope dag, watergehalteverslag en die uitkoms van die batimetrie-navorsing. <\/p>\n","protected":false},"excerpt":{"rendered":"
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