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Strahomersko okno

A cache by darklugia Send Message to Owner Message this owner
Hidden : 03/23/2016
Difficulty:
2 out of 5
Terrain:
2 out of 5

Size: Size: regular (regular)

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Geocache Description:

...Posebno nevarna pa so bila okna ali vretjà (Seefenster). Tako so nazivljali vodoshrambe, ki so bile včasih odprte, časih pa goljufivo pokrite s tenko skorjo mahu in šašev. Gorjé samotnemu človeku, ki je zašel tjà! Zginil je bil brez sledu v oknu…      

I.Šubic, 1886, Jahresbericht des k.k. Obergymnasiums zu Laibach


Strahomersko okno je izvir na Ljubljanskem barju, ki ga prištevamo med tako imenovana barjanska okna ali retja. V Registru naravnih vrednot se vodi pod evidenčno številko 7695.

Barjansko okno razumemo kot laično ime za vse pojave izvirov in manjših prostih vodnih površin na območju Barja in na njegovem obrobju.

Poznamo dva temeljna tipa oken. Prvi tip so plitva, lečam (lužam) podobna okna, k drugemu tipu pa prištevamo okna z v globino segajočimi kanali. Kanali imajo premer od 0,4 do 1,5 m in zvečine vpadajo proti jugu. Nastanek oken je povezan z dvema plastema proda v podlagi, ki sta ločena vodonosnika. Prvi tip oken naj bi nastal ob meji izklinjanja zgornje vodonosne plasti, ki je blizu površja. Pri teh oknih ni opaziti nobenih kanalov in so praviloma zelo plitva. Pri drugem tipu oken naj bi voda izvirala iz spodnjega vodonosnika. Njihov odtočni količnik naj bi bil glede na prvi tip bolj konstanten. Voda v njih ima stalno letno temperaturo med 10,5 in 11°C. Da voda iz spodnjega vodonosnika lahko doseže površje, je posledica pritiska, pod katerim je voda v vodonosniku, ter nezveznosti v sedimentih kot na primer posledice prelomov, kar omogoča pot vodi navzgor skozi sicer slabo prepustne sedimente. Okna so običajno porasla z močvirskim rastlinjem, zlasti trsjem, bičjem ali grivniki.

O barjanski oknih se je v preteklosti spletlo več zgodb; najpogosteje so ljudje pripovedovali, da je na njihovih območjih živo blato ali živ pesek, ki naj bi marsikoga že vsrkala vase.

ENG

Strahomer »window«, as it is called by the locals, is the marsh spring at Ljubljana marshland.

These kind of marsh springs form due to the water pressure in the aquifer layers and discontinuities in the sediments, i.e. geological fractures. There are two main types of marsh »windows«, shallow springs in the shape of circular hollows, often looking like larger, oval-shaped puddles, and therefore called “windows” , and springs with deep channels of 0,4 to 1,5 m in diameter, mainly inclining from south. The first type is formed at the upper aquifer border, while the former are connected to the lower aquifer. Temperature of water in these springs is constantly between 10,5 and 11°C. These springs, usually overgrown with marsh vegetation, especially reeds and rushes, represent an important geomorphological natural heritage that is very rarely found in Slovenia or wider.

There were many folk stories about marsh »windows« and how people were gobbled down in quick sand that presumably is at these locations. 

Additional Hints (Decrypt)

Qrfan fgena fgbcavp / Evtug fvqr bs gur fgnvef

Decryption Key

A|B|C|D|E|F|G|H|I|J|K|L|M
-------------------------
N|O|P|Q|R|S|T|U|V|W|X|Y|Z

(letter above equals below, and vice versa)



 

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