Radio Rom\u00e2nia Constan\u021ba<\/a> c\u0103 nivelul Dun\u0103rii \u00een apropierea gurii de v\u0103rsare este controlat \u00eentr-o m\u0103sur\u0103 important\u0103 de nivelul m\u0103rii.<\/p>\nAstfel, chiar dac\u0103 din amonte vine o cantitate mult mai mic\u0103 de ap\u0103, nivelul fluviului nu poate cobor\u00ee \u00een apropierea v\u0103rs\u0103rii \u00een aceea\u0219i m\u0103sur\u0103 ca pe sectorul fluvial.<\/p>\n
Problema apare \u00eens\u0103 \u00een alt\u0103 parte: curentul Dun\u0103rii devine mult mai slab.<\/p>\n
Apa s\u0103rat\u0103 poate urca 20-25 de kilometri pe bra\u021bul Sf\u00e2ntu Gheorghe<\/p>\n
\u00cen condi\u021biile unui debit redus, Dun\u0103rea nu mai are suficient\u0103 for\u021b\u0103 pentru a \u00eempinge apa marin\u0103 spre larg. Apa din Marea Neagr\u0103, mai dens\u0103 dec\u00e2t apa dulce, poate \u00eenainta \u00een sens invers, pe fundul bra\u021bului Sf\u00e2ntu Gheorghe.<\/p>\n
Se formeaz\u0103 astfel ceea ce speciali\u0219tii numesc o \u201epan\u0103 salin\u0103\u201d.<\/p>\n
\u201eAu fost cazuri \u00een care am putut-o \u00eenregistra p\u00e2n\u0103 la 20-25 de kilometri \u00een amonte\u201d,adaugat pentru Radio Rom\u00e2nia Constan\u021ba Alfred Vespremeanu-Stroe.<\/p>\n
Fenomenul nu \u00eenseamn\u0103 \u00eens\u0103 c\u0103 \u00eentreaga ap\u0103 de pe bra\u021b devine s\u0103rat\u0103. Apa marin\u0103 r\u0103m\u00e2ne \u00een principal \u00een straturile profunde, \u00een timp ce apa dulce, mai pu\u021bin dens\u0103, se men\u021bine deasupra.<\/p>\n
Din acest motiv, p\u0103trunderea apei s\u0103rate \u00een lacurile \u0219i canalele mai pu\u021bin ad\u00e2nci ale Deltei este mult mai limitat\u0103. O cre\u0219tere a debitului Dun\u0103rii ar \u00eempinge din nou pana de ap\u0103 salin\u0103 c\u0103tre mare.<\/p>\n
Un alt pericol: lacurile Deltei primesc mai pu\u021bin\u0103 ap\u0103 proasp\u0103t\u0103<\/p>\n
Problemele nu se limiteaz\u0103 \u00eens\u0103 la salinitate. Viteza redus\u0103 a Dun\u0103rii \u00eenseamn\u0103 \u0219i o circula\u021bie mai lent\u0103 a apei prin canalele care alimenteaz\u0103 lacurile din Delt\u0103.<\/p>\n
Apa se re\u00eennoie\u0219te mai greu \u0219i poate deveni mai slab oxigenat\u0103, condi\u021bii care favorizeaz\u0103 eutrofizarea \u2013 proliferarea algelor \u0219i a plantelor acvatice, urmat\u0103 de deteriorarea calit\u0103\u021bii apei \u0219i de perturbarea ecosistemelor acvatice.<\/p>\n
Efectele pot deveni importante mai ales dac\u0103 perioada cu debite foarte mici se prelunge\u0219te.<\/p>\n
Risc pentru apa potabil\u0103<\/p>\n
Una dintre cele mai sensibile probleme prive\u0219te localit\u0103\u021bile de la gurile Dun\u0103rii care folosesc apa fluviului.<\/p>\n
Dac\u0103 pana de ap\u0103 s\u0103rat\u0103 \u00eenainteaz\u0103 suficient de mult pentru a ajunge \u00een apropierea capt\u0103rilor, apa extras\u0103 pentru alimentarea popula\u021biei se poate amesteca cu apa marin\u0103 \u0219i poate deveni s\u0103lcie.<\/p>\n
\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"Dun\u0103rea traverseaz\u0103 \u00een aceast\u0103 perioad\u0103 un episod hidrologic excep\u021bional. La intrarea \u00een Rom\u00e2nia, \u00een sec\u021biunea Bazia\u0219, debitul a…\n","protected":false},"author":2,"featured_media":266836,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_share_on_mastodon":"0"},"categories":[5],"tags":[73748,18392,54968,32,33,31,67339,11000,37936,73749,36,37,27,21101,34,35,1308,25,73750,41,40,38,39,6494,44863,26,44685,28,29,30],"class_list":["post-266835","post","type-post","status-publish","format-standard","has-post-thumbnail","category-titluri","tag-alfred-vespremeanu-stroe","tag-apa-potabila","tag-apa-sarata","tag-breaking-news","tag-breakingnews","tag-cele-mai-populare-subiecte","tag-debit-dunare","tag-delta-dunarii","tag-dunarea","tag-eutrofizare","tag-featured-news","tag-featurednews","tag-headlines","tag-inhga","tag-latest-news","tag-latestnews","tag-marea-neagra","tag-news","tag-pana-salina","tag-ro","tag-romana","tag-romania","tag-romanian","tag-seceta","tag-sfantu-gheorghe","tag-stiri","tag-sulina","tag-titluri","tag-top-stories","tag-topstories"],"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@ro\/117116087311964233","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/posts\/266835","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/comments?post=266835"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/posts\/266835\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/media\/266836"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/media?parent=266835"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/categories?post=266835"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/tags?post=266835"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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