Ponory Ricky / Ponors of the Ricka river EarthCache

[CZ]
Ponory Ricky patri k nejvyznacnejsim hydrogeologickym lokalitam Moravskeho krasu. Souradnice Vas zavedou do udoli Ricky, kde je objasnen princip a schema podzemnich tras Hostenickeho potoka a Ricky, v navaznosti na krasove odvodnovani jizni casti Moravskeho krasu.

Oblast Moravskeho krasu je nejvetsi a nejlepe vyvinutou krasovou oblasti s nejsirsim spektrem krasovych jevu v Ceske republice. Lze zde nalezt temer vsechny krasove utvary. Moravsky kras se vyznacuje pomerne malym poctem zavrtu, pricemz ty jsou na jihu vyplneny jurskymi, castecne zpevnenymi pisky a naopak na severu jsou zejici. Vseobecne je povrch Moravskeho krasu kryt reliktni terra rosou s primesi sprase a ctvrtohornich zvetralin.

Propady Ricky se nachazeji v chranene krajinne oblasti Moravsky kras. Doporuceny pristup je po naucne stezce Ricky, jejiz zrizovatelem je Sprava CHKO Moravsky kras.

Hydrografie a jeskynni systemy udoli Ricky

Uzemi zasobuji tri hlavni pritoky – Ricky, Hostenicky a Ochozsky potok. Tyto se po vstupu na krasove uzemi propadaji do podzemi v rade aktivnich a povodnovych ponoru. Povrchova a podzemni hydrograficka sit zkrasoveleho udoli Ricky patri k nejkomplikovanejsim typum odvodnovani v ramci cele Ceske republiky.

A) Hadecka vetev
je napajena nekolika aktivnimi a povodnovymi ponory v prubehu toku Ricky krasovym uzemim. Poloha i kapacita techto ponoru je velmi promenliva. Pokracovani ponoru je uzavreno sterky a suti.

B) Vetev Hadecke estavely
rovnez zacina v Hostenickem propadani v pokracovani Sifonove chodby Nove Ochozske jeskyne. Jedna se o povodnovy odtok do Hadecke estavely, kde vyvera. Za urcitych vodnich stavu estavela funguje take jako povodnovy ponor Hadecke vetve.

C) Vytokova vetev
vznikla spojenim Hostenicke a Hadecke vetve. Vody se objevuji ve Vytoku Ricky.

D) Hostenicka vetev
Vody se propadaji v ponorech Hostenickeho propadani do asi 37m a protekaji neznamym patrem pod Ochozskou jeskyni a pravdepodobne i pres spodni patra jeskyne Netopyrky. Pri povodnich vody protekaji Ochozskou jeskyni a vyveraji ve vchodu do jeskyne.

Predstava o prutoku dnes casto neznamymi zaplavenymi jeskynemi vychazi z velke casti z tzv. stopovacich pokusu, kdy je do ponoru nalita stopovaci latka (nejaký typ barviva) a nasledne se sleduji casy a mista, kde se obarvena voda objevuje.

Ukoly nutne pro zalogovani:

1. K logu prilozte svoje foto s GPS u vtoku ponoru (samostatnym lovcum staci foto jejich GPSky u vtoku). V pripade zatopeni staci foto u zatopeneho koryta.

2. Na muj email odeslete odpovedi na nasledujici otazky:

a) Jaka je nadmorska vyska kamenu u vtoku ponoru (ponor – viz obrazek)? V pripade zatopeni staci odhad.
b) K cemu se v hydrogeologii pouziva fluorescein?
c) Tekla Ricka v dobe Vasi navstevy ve svem povrchovem koryte?

Necekejte na potvrzeni a rovnou se zalogujte. Ozvu se pouze v pripade chybne odpovedi.

Zdroje informaci: Informacni materialy Spravy CHKO Moravsky kras.

[EN]
Ponors of the Ricka river belong to the most important hydrogeological locations of the Moravian Karst. The coordinates will lead you to the valley of Ricka where the rules and the chart of underground channels of the Hostenicky brook and Ricka are explained resulting from the karst drainage of the southern part of Moravian Karst.

The territory of Moravian Karst is the largest and most developed karst area, with the widest spectrum of karst effects in the Czech Republic. Almost all karst formations can be found here. Moravian Karst have relatively few dolines which, in the South, are filled with Jurrasic, partly strengthened sands and, in the North, there are yawns. Generally, the surface of Moravian Karst is covered with relict terra rosa with the admixture of loess and Quartenary efflorescences.

Propads of Ricka appear in the Moravian Karst Protected Landscape Area. The recommended access leads through the Ricka nature trail the founder of which is Administration of the Moravian Karst Protected Landscape Area.

Hydrography and cave systems of Ricka valley

The territory is supplied with three main inflows – Ricky, Hostenicky and Ochozsky brooks. Entering the territory of the karst they sink in the underground in many active and fllooding ponors. The surface and underground hydrographic network of the karst valley of Ricka belongs to the most complicated types of drainage in the whole Czech Republic.

A) Hadecka branch
is supplied by several active and flooding ponors when Ricka runns through the karst territory. The location and capacity of these ponors vary. The continuation of the ponors is closed with gravel and detritus.

B) Hadecka gushing spring branch
also begins in Hostenice pit at the continuation of Siphon corridor of the New Ochozska cave. It is a flooding drain to Hadecka gushing spring where it rises. In certain water conditions gushing spring works also as a flooding ponor of Hadecka branch.

C) Outflow branch
originated at Hostenicka and Hadecka branches confluence. Water appears at Ricka outflows.

D) Hostenicka branch
Water sinks in the ponors of Hostenice pit into approx. 37m and runs through an unknown storey below Ochozska cave and probably also through the lower storey of Netopyrky cave. During the floods water runs through Ochozska cave and rises at the cave entrance.

The idea about the course through unknown caves, now often flooded, comes mainly from so called stalking experiments when stalking substance (some kind of colouring) is poured into the ponor and then the time and places where discolored water appears are folowed.

The necessary tasks for logging:

1. Add your photo with GPS made near the ponor (alone cachers will make do with a photo of their GPS near the ponor) to your log. In case of flooding a photo done by the flooded riverbed will do.

2. Send answers to these questions to my e-mail address:

a) What is the altitude of the stones at the ponor (ponor – see the picture). In case of flooding a guess will do.
b) What is fluorescein used for (in hydrogeology)?
c) Did Ricka flow in the surface riverbed during your visit?