{"id":11385766,"date":"2021-05-31T00:00:00","date_gmt":"2021-05-30T22:00:00","guid":{"rendered":"https:\/\/alertdiver.eu\/uncategorized-cs_cz\/potapeni-v-islandskem-strytanu-na-jedinem-miste-vhodnem-pro-ponor-v-hydrotermalnim-kominu\/"},"modified":"2021-05-31T00:00:00","modified_gmt":"2021-05-30T22:00:00","slug":"potapeni-v-islandskem-strytanu-na-jedinem-miste-vhodnem-pro-ponor-v-hydrotermalnim-kominu","status":"publish","type":"post","link":"https:\/\/alertdiver.eu\/cs_CZ\/clanky\/potapeni-v-islandskem-strytanu-na-jedinem-miste-vhodnem-pro-ponor-v-hydrotermalnim-kominu\/","title":{"rendered":"Pot\u00e1p\u011bn\u00ed v islandsk\u00e9m Str\u00fdtanu \u2013 na jedin\u00e9m m\u00edst\u011b vhodn\u00e9m pro ponor v hydroterm\u00e1ln\u00edm kom\u00ednu"},"content":{"rendered":"<p style=\"text-align: justify;\">Kdy\u017e pot&aacute;p\u011b\u010d\u016fm p\u0159ijde na mysl Island, pravd\u011bpodobn\u011b si p\u0159edstavuj&iacute; scen&eacute;rie z kontinent&aacute;ln&iacute; tektonick&eacute; trhliny Silfra napln\u011bn&eacute; k\u0159i&scaron;\u0165&aacute;lov\u011b \u010distou ledovcovou vodou pobl&iacute;\u017e nejv\u011bt&scaron;&iacute;ho islandsk&eacute;ho m\u011bsta Reykjav&iacute;ku. Jen n\u011bkte\u0159&iacute; z nich v\u011bd&iacute;, \u017ee daleko na severu Islandu se nach&aacute;z&iacute; dal&scaron;&iacute; jedine\u010dn&eacute; a je&scaron;t\u011b zaj&iacute;mav\u011bj&scaron;&iacute; m&iacute;sto pro pot&aacute;p\u011bn&iacute;, a sice hydroterm&aacute;ln&iacute; kom&iacute;n zvan&yacute; Str&yacute;tan.<\/p>\n<p style=\"text-align: justify;\">Str&yacute;tan je jedin&yacute; zn&aacute;m&yacute; hydroterm&aacute;ln&iacute; kom&iacute;n, v kter&eacute;m se d&aacute; pot&aacute;p\u011bt. V&scaron;echny ostatn&iacute; objeven&eacute; hydroterm&aacute;ln&iacute; kom&iacute;ny, naz&yacute;van&eacute; tak&eacute; &bdquo;\u010dern&iacute; ku\u0159&aacute;ci&ldquo; nebo b&iacute;l&iacute; ku\u0159&aacute;ci (podle barvy vody, kterou vypou&scaron;t\u011bj&iacute;), le\u017e&iacute; v oce&aacute;nu v hloubce dvou a\u017e &scaron;esti kilometr\u016f a lze se k nim dostat pouze ponorkami.<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" class=\"fr-dib fr-draggable\" src=\"\/wp-content\/uploads\/imgimport\/1049\/image-01-1500.jpg\" style=\"width: auto;\"><\/p>\n<p style=\"text-align: justify;\">Geologicky je Island neklidn&yacute;m m&iacute;stem. Nach&aacute;z&iacute; se na st\u0159edoatlantick&eacute;m h\u0159ebeni, kde se kontinent&aacute;ln&iacute; desky Eurasie a Severn&iacute; Ameriky pohybuj&iacute; od sebe asi o jeden a\u017e dva centimetry ro\u010dn\u011b a neust&aacute;le ostrov trhaj&iacute;, co\u017e zp\u016fsobuje zem\u011bt\u0159esen&iacute; a erupce l&aacute;vy, kter&aacute; n&aacute;sledn\u011b zapl\u0148uje nejbli\u017e&scaron;&iacute; &uacute;dol&iacute;. Island tak&eacute; sed&iacute; na velmi neklidn&eacute;m pl&aacute;&scaron;ti, kde p\u0159&iacute;val hork&eacute;ho magmatu p\u0159&iacute;mo z j&aacute;dra Zem\u011b nap&aacute;j&iacute; obrovsk&eacute; sopky, z nich\u017e mnoh&eacute; sp&iacute; pod mohutn&yacute;mi ledovci. Pr&aacute;v\u011b tento proces vytvo\u0159il Str&yacute;tan.<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" class=\"fr-dib fr-draggable\" src=\"\/wp-content\/uploads\/imgimport\/1049\/image-02-1500.jpg\" style=\"width: auto;\"><\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" class=\"fr-dib fr-draggable\" src=\"\/wp-content\/uploads\/imgimport\/1049\/image-03-1500.jpg\" style=\"width: auto;\"><\/p>\n<p style=\"text-align: justify;\">Str&yacute;tan se nach&aacute;z&iacute; pobl&iacute;\u017e Akureyri, druh&eacute;ho nejv\u011bt&scaron;&iacute;ho ostrova pat\u0159&iacute;c&iacute;ho k Islandu. Z Reykjav&iacute;ku existuj&iacute; p\u0159&iacute;m&eacute; lety, ale l&eacute;tat tam by znamenalo prop&aacute;snout jeden z nejpozoruhodn\u011bj&scaron;&iacute;ch silni\u010dn&iacute;ch v&yacute;let\u016f na na&scaron;&iacute; planet\u011b, kter&yacute; lze uskute\u010dnit po hlavn&iacute; islandsk&eacute; silnici Ring Road vedouc&iacute; cel&yacute;m ostrovem. N\u011bkter&eacute; z nejp\u016fsobiv\u011bj&scaron;&iacute;ch islandsk&yacute;ch scen&eacute;ri&iacute; a obl&iacute;ben&yacute;ch turistick&yacute;ch m&iacute;st jsou z t&eacute;to silnice snadno dostupn&eacute;, v\u010detn\u011b vodop&aacute;d\u016f Seljalandsfoss a Sk&oacute;gafoss, laguny ledovce J&ouml;kuls&aacute;rl&oacute;n a pl&aacute;\u017e&iacute; V&iacute;k s \u010dern&yacute;m p&iacute;skem.<span>&nbsp;<\/span><\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" class=\"fr-dib fr-draggable\" src=\"\/wp-content\/uploads\/imgimport\/1049\/image-04-1500.jpg\" style=\"width: auto;\"><\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" class=\"fr-dib fr-draggable\" src=\"\/wp-content\/uploads\/imgimport\/1049\/image-05-1500l.jpg\" style=\"width: auto;\"><\/p>\n<p style=\"text-align: justify;\">Akureyri je jen 50 km ji\u017en\u011b od Pol&aacute;rn&iacute;ho kruhu. Kousek od m\u011bsta na z&aacute;padn&iacute;m b\u0159ehu Eyjafj&ouml;r&eth;uru, fjordu v Severn&iacute;m ledov&eacute;m oce&aacute;nu, le\u017e&iacute; osada zvan&aacute; Hjalteyri, kde se nach&aacute;z&iacute; pot&aacute;p\u011b\u010dsk&eacute; st\u0159edisko Str&yacute;tan. Jeho majitel, Erlendur Bogason, je islandsk&aacute; pot&aacute;p\u011b\u010dsk&aacute; legenda a toto pot&aacute;p\u011b\u010dsk&eacute; centrum provozuje spole\u010dn\u011b se svou dcerou S&aelig;v&ouml;r. Objevil a jako prvn&iacute; prozkoumal Str&yacute;tan a okoln&iacute; hydroterm&aacute;ln&iacute; oblasti zvan&eacute; Arnarnesstr&yacute;tur.<span>&nbsp;<\/span><\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" class=\"fr-dib fr-draggable\" src=\"\/wp-content\/uploads\/imgimport\/1049\/image-06-1500.jpg\" style=\"width: auto;\"><\/p>\n<p style=\"text-align: justify;\">Str&yacute;tan le\u017e&iacute; uprost\u0159ed Eyjafj&ouml;r&eth;uru, v hloubce asi 70 metr\u016f. Geologick&aacute; aktivita vytvo\u0159ila hork&yacute; pramen, kter&yacute; uvol\u0148oval sladkou vodu oh\u0159&aacute;tou m\u011blk&yacute;m magmatem pod oce&aacute;nem. Vysok&eacute; koncentrace rozpu&scaron;t\u011bn&yacute;ch miner&aacute;l\u016f ve vod\u011b krystalizuj&iacute;, jakmile p\u0159ijdou do styku se studenou mo\u0159skou vodou. Tento proces vytvo\u0159il jedin&yacute; v&aacute;pencov&yacute; kom&iacute;n, kter&yacute; stoup&aacute; jako mohutn&aacute; v\u011b\u017e z hloubky 70 m na 15 m pod hladinou. V\u011bdci odhaduj&iacute;, \u017ee trvalo v&iacute;ce ne\u017e 10 000 let od posledn&iacute; doby ledov&eacute;, ne\u017e tento hydroterm&aacute;ln&iacute; pr\u016fduch dos&aacute;hl sv&eacute; sou\u010dasn&eacute; velikosti. N\u011bkter&eacute; \u010d&aacute;sti, v\u010detn\u011b &scaron;pi\u010dky kom&iacute;na, se st&aacute;le je&scaron;t\u011b aktivn\u011b dotv&aacute;\u0159ej&iacute;.<span>&nbsp;<\/span><\/p>\n<p style=\"text-align: justify;\">Hydroterm&aacute;ln&iacute; lokalita v Eyjafj&ouml;r&eth;uru byla prvn&iacute; podvodn&iacute; chr&aacute;n\u011bnou oblast&iacute; na Islandu, kter&aacute; z&iacute;skala tento statut ji\u017e v roce 2001. K pot&aacute;p\u011bn&iacute; v t\u011bchto m&iacute;stech je zapot\u0159eb&iacute; povolen&iacute; od pot&aacute;p\u011b\u010dsk&eacute;ho centra Str&yacute;tan, kter&eacute; organizuje ponory s pr\u016fvodcem.<span>&nbsp;<\/span><\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" class=\"fr-dib fr-draggable\" src=\"\/wp-content\/uploads\/imgimport\/1049\/image-07-1500.jpg\" style=\"width: auto;\"><\/p>\n<p style=\"text-align: justify;\">Arnarnesstr&yacute;tur se skl&aacute;d&aacute; z n\u011bkolika men&scaron;&iacute;ch hydroterm&aacute;ln&iacute;ch kom&iacute;n\u016f stoupaj&iacute;c&iacute;ch ze dna ve v&yacute;&scaron;ce 23 m a\u017e do 15 m, z nich\u017e trysk&aacute; sladk&aacute; voda tepl&aacute; 79&deg;C. Tato oblast je nejen mimo\u0159&aacute;dn\u011b vz&aacute;cn&yacute;m geologick&yacute;m fenom&eacute;nem, ale m&aacute; tak&eacute; bohatou a rozmanitou mo\u0159skou faunu i fl&oacute;ru. Na \u0159as&aacute;ch pokr&yacute;vaj&iacute;c&iacute;ch kom&iacute;ny \u017eije \u0159ada druh\u016f mo\u0159sk&yacute;ch pl\u017e\u016f a m\u011bkk&yacute;&scaron;\u016f (nudibranch), krab\u016f a dal&scaron;&iacute;ch \u017eivo\u010dich\u016f. Mnoho trhlin v hydroterm&aacute;ln&iacute;m kom&iacute;nu ob&yacute;v&aacute; vlkou&scaron; obecn&yacute; a b\u011b\u017en\u011b je zde k vid\u011bn&iacute; mnoho dal&scaron;&iacute;ch druh\u016f ryb, nap\u0159. tresky, plat&yacute;si a ryby hran&aacute;\u010dovit&eacute; (cyclopterus lumpus).<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" class=\"fr-dib fr-draggable\" src=\"\/wp-content\/uploads\/imgimport\/1049\/image-08-1500.jpg\" style=\"width: auto;\"><\/p>\n<p style=\"text-align: justify;\">Prvn&iacute; pohled na Str&yacute;tan je naprosto mimo\u0159&aacute;dn&yacute; a jedine\u010dn&yacute;. P\u016fsob&iacute; dojmem temn&eacute;, vysok&eacute; a osam\u011bl&eacute; v\u011b\u017ee stoupaj&iacute;c&iacute; z chladn&yacute;ch hlubin fjordu a stoj&iacute;c&iacute; uprost\u0159ed Severn&iacute;ho ledov&eacute;ho oce&aacute;nu. Vypad&aacute; to a\u017e nadpozemsky a mimozemsky, a p\u0159esto je to pravd\u011bpodobn\u011b jeden z &bdquo;nejpozem&scaron;t\u011bj&scaron;&iacute;ch&ldquo; jev\u016f, jak&yacute; v\u016fbec existuje.<\/p>\n<p style=\"text-align: justify;\">B\u011bhem ponoru pot&aacute;p\u011b\u010di obvykle pomalu krou\u017e&iacute; kom&iacute;nem, kter&yacute; m&aacute; v pr\u016fm\u011bru n\u011bkolik metr\u016f a s ka\u017ed&yacute;m okruhem se dost&aacute;vaj&iacute; do m\u011bl\u010d&iacute; vody. P\u0159itom je patrn&eacute;, kde se kom&iacute;n st&aacute;le dotv&aacute;\u0159&iacute; &#8211; z trhlin vyt&eacute;k&aacute; tepl&aacute; voda a miner&aacute;ln&iacute; &uacute;tvary tam jsou zjevn\u011b nov&eacute;. Z vody vych&aacute;zej&iacute;c&iacute; z hydroterm&aacute;ln&iacute;ch pr\u016fduch\u016f je c&iacute;tit teplo, kter&eacute; ale nijak v&yacute;razn\u011b neovliv\u0148uje celkovou teplotu vody, kter&aacute; se obvykle pohybuje mezi 4 a\u017e 8&deg;C. Viditelnost je zpravidla kolem 10 m. <span>&nbsp;<\/span><\/p>\n<p style=\"text-align: justify;\">Kom&iacute;n je domovem mnoha mo\u0159sk&yacute;ch rostlin a \u017eivo\u010dich\u016f, v\u010detn\u011b nejr\u016fzn\u011bj&scaron;&iacute;ch druh\u016f mo\u0159sk&yacute;ch \u0159as a sv\u011btl&yacute;ch sasanek, kter&eacute; se zde za t\u011bchto zvl&aacute;&scaron;tn&iacute;ch a\u017e extr&eacute;mn&iacute;ch podm&iacute;nek vyvinuly a usadily. Pr\u016fduchy tak&eacute; p\u0159itahuj&iacute; spoustu ryb, nap\u0159. se tu vid&iacute; hejna tresek plovouc&iacute;ch kom&iacute;nem nahoru a dol\u016f, ale tak&eacute; elegantn\u011b se vzn&aacute;&scaron;ej&iacute;c&iacute; med&uacute;zy.<span>&nbsp;<\/span><\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" class=\"fr-dib fr-draggable\" src=\"\/wp-content\/uploads\/imgimport\/1049\/image-09-1500.jpg\" style=\"width: auto;\"><\/p>\n<p style=\"text-align: justify;\">\u010clov\u011bk se m\u016f\u017ee snadno nechat un&eacute;st a\u017e zhypnotizovat t\u0159pytivou kr&aacute;sou v\u011btrac&iacute;ch pr\u016fduch\u016f, proto nezapome\u0148te sledovat, kolik v&aacute;m zb&yacute;v&aacute; \u010dasu. Vzhledem k tomu, \u017ee vrchol kom&iacute;nu je v hloubce 15 m, je nutn&eacute; uskute\u010dnit ve vod\u011b bezpe\u010dnostn&iacute; zast&aacute;vku. Tak&eacute; je zapot\u0159eb&iacute; dob\u0159e ovl&aacute;dat vzpl&yacute;vavost, a proto\u017ee mo\u0159e n\u011bkdy b&yacute;v&aacute; trochu rozbou\u0159en&eacute; a vyskytuje se zde i siln\u011bj&scaron;&iacute; proud\u011bn&iacute;, m\u016f\u017ee b&yacute;t nutn&eacute; p\u0159idr\u017eovat se lana a vystupovat pomalu.<span>&nbsp;<\/span><\/p>\n<p style=\"text-align: justify;\"><span class=\"fr-video fr-dvb fr-draggable\" contenteditable=\"false\" draggable=\"true\"><iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/bwQr-UKBNTo\" title=\"YouTube video player\" frameborder=\"0\" allowfullscreen=\"\"><\/iframe><\/span><\/p>\n<p style=\"text-align: justify;\">Tyto pot&aacute;p\u011b\u010dsk&eacute; lokality se doporu\u010duj&iacute; pouze pro pokro\u010dil&eacute; rekrea\u010dn&iacute; pot&aacute;p\u011b\u010de. Pot&aacute;p\u011bn&iacute; na severu Islandu znamen&aacute;, \u017ee se pot&aacute;p&iacute;te v Severn&iacute;m ledov&eacute;m oce&aacute;nu, co\u017e m\u016f\u017ee b&yacute;t nesm&iacute;rn\u011b n&aacute;ro\u010dn&eacute;. Voda je zde studen&aacute; a hladina oce&aacute;nu b&yacute;v&aacute; \u010dasto rozbou\u0159en&aacute;. Ale tak&eacute; zde existuje jedin&aacute; mo\u017enost pot&aacute;p\u011bt se v hydroterm&aacute;ln&iacute;m kom&iacute;nu.<\/p>\n<p style=\"text-align: justify;\"><\/p>\n<hr>\n<p style=\"text-align: justify;\"><\/p>\n<p style=\"text-align: justify;\">Fotografie a videa od: Claudia Schmitt, Hendrik S. Schmitt, <a href=\"https:\/\/thejetlagged.com\/\" target=\"_blank\" rel=\"noopener\">The Jetlagged<\/a><\/p>\n<p style=\"text-align: justify;\"><\/p>\n<hr>\n<p style=\"text-align: justify;\"><\/p>\n<p style=\"text-align: center;\">Nezapome\u0148te se ujistit o sv&eacute;m aktivn&iacute;m \u010dlenstv&iacute; v DAN. Pokud v&aacute;m \u010dlenstv&iacute; vypr&scaron;elo, nav&scaron;tivte DAN na <a href=\"http:\/\/www.daneurop.org\/\" target=\"_blank\" rel=\"noopener\">www.daneurop.org<\/a> a \u010dlenstv&iacute; si obnovte.&nbsp;<\/p>\n<p style=\"text-align: center;\">\u010clenstv&iacute; v DAN zaji&scaron;\u0165uje slu\u017eby nejv\u011bt&scaron;&iacute; mezin&aacute;rodn&iacute; s&iacute;t\u011b pro pomoc pot&aacute;p\u011b\u010d\u016fm v p\u0159&iacute;pad\u011b nouze v&scaron;ude na sv\u011bt\u011b.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Kdy\u017e pot&aacute;p\u011b\u010d\u016fm p\u0159ijde na mysl Island, pravd\u011bpodobn\u011b si p\u0159edstavuj&iacute; scen&eacute;rie z kontinent&aacute;ln&iacute; tektonick&eacute; trhliny Silfra napln\u011bn&eacute; k\u0159i&scaron;\u0165&aacute;lov\u011b \u010distou ledovcovou vodou pobl&iacute;\u017e nejv\u011bt&scaron;&iacute;ho islandsk&eacute;ho m\u011bsta Reykjav&iacute;ku&#8230;.<\/p>\n","protected":false},"author":1,"featured_media":11376546,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[384],"tags":[1890],"authors":[778],"class_list":["post-11385766","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-clanky","tag-50-nejlepsich-az-kultovnich-mist-na-potapeni","authors-claudia-schmitt-the-jetlagged-cs_cz"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.2 - 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