beautyfarm - THE BEST DESIGN
DOWNLOAD MY MUSIK,participa la concursuri,soft-uri,cool stuff,NIKON CLUB,Baruri Trendy,ScreenSavers,Accesorii Cool,Masini sexy,Bannere,Games,Aparitii Cinematografice,Tribal Farm...etc distreaza-te!Totul pentru TINE.Cele mai tari subiecte.
|
Lista Forumurilor Pe Tematici
|
beautyfarm - THE BEST DESIGN | Inregistrare | Login
POZE BEAUTYFARM - THE BEST DESIGN
Nu sunteti logat.
|
Nou pe simpatie:
Roxxy22 Profile
 | Femeie
25 ani
Cluj
cauta Barbat
25 - 48 ani |
|
ADMIN-ELECTRIK_CAT
Administrator
 Din: CAT LAND
Inregistrat: acum 18 ani
Postari: 8870
|
|
Misterioasele cercuri intunecate din Lacul Baikal
Cercetatorii rusi au descoperit cu stupoare un numar de cercuri intunecate de origine stranie aparute pe suprafata lacului Baikal din Siberia. Imaginile au ajuns la cunostinta oamenilor de stinta numai dupa ce a analizat cu atentie unele fotografii din satelit ale Lacului Baikal.
Cu toate ca fenomenul nu poate fi inca explicat, unii cercetatori sunt de parere ca imaginile cu cercurile de pe Baikal nu reprezinta un fenomen nou, doar ca nu au fost observate pana acum din cauza dimensiunilor lor mari, cat si a culmilor muntilor care inconjoara lacul. Conform observatiilor detinute pana in prezent, structurile circulare de pe gheata lacului Baikal nu apar in decursul fiecarui an. Prima data au fost descoperite in iarna anului 1999, pentru a reaparea ulterior in iernile anilor 2003 si 2005. Cercurile intunecate apar doar in decursul lunii aprilie si isi schimba locatia de fiecare data, anul acesta, spre exemplu, aparand doar in partea de sud a lacului. Unii experti considera ca aparitia acestor cercuri este legata de emisiile de gaze aparute din straturile sedimentare ale lacului, in timp ce alti specialisti sunt de parere ca lacul Baikal ascunde multe alte mistere insuficient cercetate, iar coroborarea activitatii geologice cu cercurile intunecate este doar o apropiere fortata in incercarea de a gasi o explicatie pe moment.
Scientists have discovered dark circles on satellite images of Lake Baikal’s ice. They can not explain the phenomenon yet, the website of ScanEx Company said.
“The circles on Baikal’s ice are not a new phenomenon obviously. Due to their big size, it’s impossible to see them from ice or even from mountain ridges surrounding the lake”, the site says. That’s why the circles were discovered when a daily space monitoring of Baikal’s nature territory began upon the request from the Russian Ministry for Natural Resources and Ecology.
According to observations, circle structures do not appear on Baikal’s ice every year. They were first discovered in 1999, then in 2003 and 2005. They mostly appear in April and change their location every time as compared with previous years. Now they were found in the southern end of Baikal.
The causes, which lead to the appearance of circles on the ice of the lake, have not been studied thoroughly yet. Experts presume that they can be connected with emissions of natural gas from Baikal’s sedimentary strata.
From the geological point of view, Lake Baikal is a graben lake, a piece of the Earth’s crust, limited with steep clefts and attached to a rift zone. Rifts are characterized by an increased thermal flux and seismic activity. High temperature causes an intense generation of gas. Emissions of natural gas from the lake bottom can be observed in summer owing to bubbles rising to the surface and in winter due to unfrozen patches of water with diameter from half a meter to hundreds of meters.
“Dark circles on Baikal’s lake are too big. Emissions are likely to be connected with seismic activity and tectonic changes in Baikal’s rift system”, the site quotes the opinion of experts from the Russian Geological Foundation.
There is an opinion that in order to explain the mysterious phenomenon, we should study the system of a thermal point source on the lake bottom. In this case, emissions rising upwards from a thermal source are able to become circled-shaped. Atmospheric and biogenic factors are also likely to be involved in the phenomenon.
28.5KB
_______________________________________
 PM-URI  №1
  TUTORIAL 3XFORUM
 | REPORT BROKEN LINKS | 
|
|
| pus acum 15 ani |
|
