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- The Grünloch-Experiment (Lunz am See, Austria)

- Meteorological Field Campaign about temperature inversions in Alpine basins


Multi sinkholes

As this area provides many sinkholes of different size and shape, one goal of our studies was to compare different sinkholes under the same synoptic conditions.

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The volume of Seekopfalm (D1) is less than 1/10 of Gruenloch (below saddle), but the slope angles are nearly the same! D3 are D4 steep sinkholes without sun in winter. D2 is too small for extremely cold temperatures.

Basin

floor height(mMSL)

outflow depth(m)

diameter

 (m)

drainage area
(m2)

volume

 (m3)

total drainage area (m2)

Mean slope angle

D0 - Gruenloch

1270

53

600

295,000

7,000,000

2,120,000

11.7°

D1 - Seekopfalm

1368

26

250

51,000

550,000

245,000

12.5°

D2 -

1393

5

45

1,600

2,700

313,000

12.2°

D3 -

1381

17

75

4,440

19,300

313,000

29.5°

D4 -

1372

22

76

4,560

41,000

334,500

32.3°

 

Comparison of different size sinkholes

Note: Gruenloch and Seekopfalm have the same temperature! The steep dolines are never as cold as
Gruenloch and Seekopfalm (warm sidewalls), but they have a lower oscillations. D2 is too small to build
up an inversion.

- last update: 05.12.2002 | contact: stefan@eisenbach.at|