{"id":138124,"date":"2018-08-19T08:42:21","date_gmt":"2018-08-19T07:42:21","guid":{"rendered":"http:\/\/zakrasnejsivimperk.cz\/?p=138124"},"modified":"2018-08-22T14:08:56","modified_gmt":"2018-08-22T13:08:56","slug":"cesky-hydrometeorologicky-ustav-vysoke-teploty-i-nadale-ohrozuji-ceskou-republiku-stav-sucha-se-dale-prohlubuje","status":"publish","type":"post","link":"https:\/\/zakrasnejsivimperk.cz\/?p=138124","title":{"rendered":"\u010cESK\u00dd HYDROMETEOROLOGICK\u00dd \u00daSTAV: Vysok\u00e9 teploty i nad\u00e1le ohro\u017euj\u00ed \u010ceskou republiku. Stav sucha se d\u00e1le prohlubuje"},"content":{"rendered":"

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Sr\u00e1\u017ekov\u00fd deficit pokra\u010duje i v m\u011bs\u00edci srpnu, v prvn\u00edch dvou t\u00fddnech m\u011bs\u00edce nedosahovaly sr\u00e1\u017ekov\u00e9 \u00fahrny na \u00fazem\u00ed \u010cesk\u00e9 republiky ani t\u0159etiny hodnot, kter\u00e9 jsou pro toto obdob\u00ed obvykl\u00e9. V\u00edce ne\u017e polovina sledovan\u00fdch profil\u016f na vodn\u00edch toc\u00edch vykazuje hydrologick\u00e9 sucho.<\/h6>\n

Druh\u00fd srpnov\u00fd t\u00fdden se vyzna\u010doval op\u011bt v\u00fdraznou nerovnom\u011brnost\u00ed v rozlo\u017een\u00ed sr\u00e1\u017ekov\u00fdch \u00fahrn\u016f na \u00fazem\u00ed \u010cR. Zat\u00edmco v prvn\u00edm srpnov\u00e9m t\u00fddnu spadlo v\u00edce sr\u00e1\u017eek v \u010cech\u00e1ch, tak ve druh\u00e9m t\u00fddnu na Morav\u011b. Celkov\u011b spadla na \u00fazem\u00ed \u010cR t\u0159etina mno\u017estv\u00ed sr\u00e1\u017eek oproti norm\u00e1ln\u00edmu mno\u017estv\u00ed. V \u010cech\u00e1ch to bylo pouh\u00fdch 28 % a na \u00fazem\u00ed Moravy 43 % oproti norm\u00e1lu pro tento t\u00fdden. Nutno v\u0161ak podotknout, \u017ee v\u011bt\u0161ina sr\u00e1\u017eek se vyskytla b\u011bhem bou\u0159ek, p\u0159\u00edpadn\u011b m\u011bla formu sr\u00e1\u017eek p\u0159\u00edvalov\u00fdch, co\u017e z hydrologick\u00e9ho hlediska nen\u00ed ide\u00e1ln\u00ed zejm\u00e9na pro dotaci podzemn\u00edch vod.<\/p>\n

\u201eVlhkost p\u016fdy se v minul\u00e9m t\u00fddnu nad\u00e1le t\u00e9m\u011b\u0159 na cel\u00e9m \u00fazem\u00ed \u010cR zmen\u0161ovala. V obou sledovan\u00fdch p\u016fdn\u00edch profilech, 0 a\u017e 40 cm i 0 a\u017e 100 cm pod travn\u00edm porostem, je s v\u00fdjimkou horsk\u00fdch poloh prakticky na cel\u00e9m \u00fazem\u00ed vlhkost ni\u017e\u0161\u00ed ne\u017e 30 % vyu\u017eiteln\u00e9 vodn\u00ed kapacity (VVK), v profilu do 100 cm p\u0159evl\u00e1d\u00e1 dokonce \u00fazem\u00ed s vlhkost\u00ed pod 10 % VVK; zde je vlhkost v\u011bt\u0161inou ji\u017e na bodu vadnut\u00ed (obr. 1),\u201c<\/em> uv\u00e1d\u00ed biometeorolog Tom\u00e1\u0161 Vr\u00e1bl\u00edk.<\/p>\n

Z pohledu hydrologick\u00e9ho sucha u povrchov\u00fdch vod se situace na \u00fazem\u00ed \u010cesk\u00e9 republiky v porovn\u00e1n\u00ed s minul\u00fdm t\u00fddnem m\u00edrn\u011b zhor\u0161ila. Aktu\u00e1ln\u011b vykazuje v\u00edce ne\u017e polovina (ca 54 %) sledovan\u00fdch profil\u016f (obr. 2) na \u00fazem\u00ed \u010cesk\u00e9 republiky stav hydrologick\u00e9ho sucha, tj. je zde pr\u016ftok, kter\u00fd je v dan\u00e9m profilu dosa\u017een nebo p\u0159ekro\u010den pr\u016fm\u011brn\u011b 355 dn\u00ed v roce, a u p\u0159ibli\u017en\u011b t\u0159etiny sledovan\u00fdch profil\u016f je indikov\u00e1n 364denn\u00ed pr\u016ftok. Nejv\u00edce profil\u016f s indikac\u00ed hydrologick\u00e9ho sucha se nach\u00e1z\u00ed v povod\u00ed horn\u00edho Labe a Vltavy, kde jejich pod\u00edl je t\u00e9m\u011b\u0159 dv\u011b t\u0159etiny z celkov\u00e9ho po\u010dtu. Naopak nejmen\u0161\u00ed pod\u00edl je v povod\u00ed Odry (jedna \u010dtvrtina) a v povod\u00ed Moravy (jedna t\u0159etina).<\/p>\n

\u201eAktu\u00e1ln\u011b ve vodn\u00edch toc\u00edch ve sledovan\u00fdch profilech prot\u00e9k\u00e1 p\u0159ev\u00e1\u017en\u011b 5 a\u017e 45 procent toho, co je pro toto obdob\u00ed obvykl\u00e9. M\u00edrn\u011b vodn\u011bj\u0161\u00ed (a\u017e 65 %) jsou n\u011bkter\u00e9 toky odvod\u0148uj\u00edc\u00ed\u00a0\u0160umavu, Beskydy a Jesen\u00edky. Nejz\u00e1va\u017en\u011bj\u0161\u00ed situace je i nad\u00e1le v povod\u00ed Labe a Oh\u0159e, kde u t\u00e9m\u011b\u0159 poloviny sledovan\u00fdch profil\u016f je pr\u016ftok na \u00farovni 364 denn\u00edho pr\u016ftoku (Q364d), co\u017e je pr\u016ftok, kter\u00fd je v dlouhodob\u00e9m pr\u016fm\u011bru dosa\u017een po 364 dn\u00ed v roce,\u201c<\/em> uv\u00e1d\u00ed hydrolog \u010cHM\u00da Radek \u010cekal.<\/p>\n

Z hlediska dlouhodob\u00fdch pozorov\u00e1n\u00ed jsou nejv\u00edce posti\u017een\u00e9 i nad\u00e1le toky v povod\u00ed S\u00e1zavy, Jizery, Sm\u011bd\u00e9, Plou\u010dnice, Lu\u017enice, Ne\u017e\u00e1rky, p\u0159\u00edtoky horn\u00edho a st\u0159edn\u00edho Labe (\u00dapa, Lou\u010dn\u00e1, V\u00fdrovka), n\u011bkter\u00e9 toky v povod\u00ed Moravy a m\u00edsty i dal\u0161\u00ed toky ve st\u0159edn\u00edch nadmo\u0159sk\u00fdch v\u00fd\u0161k\u00e1ch. Oproti p\u0159edchoz\u00edmu t\u00fddnu p\u0159ibyly toky v povod\u00ed horn\u00ed Berounky, a to horn\u00ed tok Radbuzy, M\u017ee a Kosovsk\u00fd potok (obr. 3).<\/p>\n

V p\u0159\u00edpad\u011b podzemn\u00edch vod se situace oproti p\u0159ede\u0161l\u00e9mu t\u00fddnu m\u00edrn\u011b zhor\u0161ila, a z\u016fst\u00e1v\u00e1 u m\u011blk\u00fdch vrt\u016f v \u010cesk\u00e9 republice i nad\u00e1le hodnocena jako siln\u011b podnorm\u00e1ln\u00ed. K m\u00edrn\u00e9mu zhor\u0161en\u00ed stavu podzemn\u00edch vod do\u0161lo v povod\u00ed horn\u00ed S\u00e1zavy, Odry a Ol\u0161e a Ostravice. K jeho p\u0159echodn\u00e9mu m\u00edrn\u00e9mu zlep\u0161en\u00ed do\u0161lo pouze v povod\u00ed horn\u00ed Oh\u0159e a p\u0159i soutoku Dyje a Moravy. Hladina ve vrtech ve srovn\u00e1n\u00ed s p\u0159edchoz\u00edm t\u00fddnem v celkov\u00e9m pr\u016fm\u011bru p\u0159ev\u00e1\u017en\u011b m\u00edrn\u011b klesala nebo stagnovala. Po\u010det vrt\u016f, u kter\u00fdch bylo dosa\u017eeno siln\u011b podnorm\u00e1ln\u00ed nebo mimo\u0159\u00e1dn\u011b podnorm\u00e1ln\u00ed \u00farovn\u011b hladiny, tj. siln\u00e9ho \u010di mimo\u0159\u00e1dn\u00e9ho sucha, se p\u0159\u00edli\u0161 nezm\u011bnil a tvo\u0159\u00ed 71 % v\u0161ech objekt\u016f. Hladina podzemn\u00ed vody ve vrtech v povod\u00ed Orlice, Labe od Orlice po Jizeru, horn\u00ed S\u00e1zavy, Plou\u010dnice a Jihlavy dos\u00e1hla \u00farovn\u011b mimo\u0159\u00e1dn\u00e9ho sucha (obr. 4).<\/p>\n

Text a grafika:\u00a0\u010cESK\u00dd HYDROMETEOROLOGICK\u00dd \u00daSTAV<\/strong><\/p>\n

Ilustra\u010dn\u00ed foto: pixabay<\/p>\n

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  Sr\u00e1\u017ekov\u00fd <\/p>\n","protected":false},"author":2,"featured_media":138138,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"gallery","meta":{"footnotes":""},"categories":[110],"tags":[],"jetpack_featured_media_url":"https:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2018\/08\/19\/r\u00e1me\u010dek-sucho.jpg","_links":{"self":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/138124"}],"collection":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=138124"}],"version-history":[{"count":5,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/138124\/revisions"}],"predecessor-version":[{"id":138139,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/138124\/revisions\/138139"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/media\/138138"}],"wp:attachment":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=138124"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=138124"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=138124"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}