The role of cave ventilation in governing cave air temperature and radon levels ( Postojna Cave, Slovenia)

被引：36
作者：
Gregoric, Asta [1 ]
Vaupotic, Janja [1 ]
Sebela, Stanka [2 ]
机构：
[1] Jozef Stefan Inst, Dept Environm Sci, Ljubljana 1000, Slovenia
[2] Slovenian Acad Sci & Arts, Karst Res Inst, Res Ctr, Postojna 6230, Slovenia
来源：
INTERNATIONAL JOURNAL OF CLIMATOLOGY | 2014年 / 34卷 / 05期
关键词：
karst cave; radon; radon exhalation; temperature; cave ventilation; cave microclimate; CARLSBAD-CAVERNS; EXCHANGE; FLOW;
D O I：
10.1002/joc.3778
中图分类号：
P4 [大气科学（气象学）];
学科分类号：
0706 ; 070601 ;
摘要：
Radon concentration and cave temperature were studied at two morphologically different locations (the Beautiful CavesBC and the lowest pointLP) in Postojna Cave (Slovenia). Radon concentration was considered a trace gas for cave ventilation research, where cave temperature was used as a supported microclimatic parameter. The influence of several climatic factors on radon concentration was studied, from which outside air temperature was found to have the highest control over cave ventilation. Measured radon concentration during 1-year period was in the range from 740 to 4000Bqm(-3) at LP, whereas during 2-year period at BC radon concentration experienced two different annual cycles. The change was observed after flood in September 2010. Radon concentration was in the range from 500 to 9000Bqm(-3) in the year 2010 and 500 to 5500Bqm(-3) in the year 2011 and 2012. Temperature was in the range from 9.9 to 10.5 degrees C and 9.8 to 10.7 degrees C at BC and BC-1 (the main passage connected to the LP), respectively. Two different ventilation regimes can be distinguished for LP location and for year 2010 at BC, whereas after flood, three ventilation regimes are characteristic for BC location. Significant change of radon emissions was observed after flood.
引用
收藏
页码：1488 / 1500
页数：13
相关论文
共 42 条
  • [1] [Anonymous], 2004, Theor. Appl. Karstol.
  • [2] Badino G, 2010, ACTA CARSOLOGICA, V39, P427
  • [3] Baldini JUL, 2006, J CAVE KARST STUD, V68, P4
  • [4] Generalised Entropy of Curves for the Analysis and Classification of Dynamical Systems
    Balestrino, Aldo
    Caiti, Andrea
    Crisostomi, Emanuele
    [J]. ENTROPY, 2009, 11 (02) : 249 - 270
  • [5] Cigna A.A., 2003, Int. J. Speleol., V32, P113, DOI [10.5038/1827-806X.32.1.8, DOI 10.5038/1827-806X.32.1.8]
  • [6] Cigna AA., 1968, Int. J. Speleol, V3, P41, DOI [DOI 10.5038/1827-806X.3.1.3, 10.5038/1827-806X.3.1.3]
  • [7] Short-term CO2(g) exchange between a shallow karstic cavity and the external atmosphere during summer: Role of the surface soil layer
    Cuezva, S.
    Fernandez-Cortes, A.
    Benavente, D.
    Serrano-Ortiz, R.
    Kowalski, A. S.
    Sanchez-Moral, S.
    [J]. ATMOSPHERIC ENVIRONMENT, 2011, 45 (07) : 1418 - 1427
  • [8] RECOGNITION OF MICROCLIMATE ZONES THROUGH RADON MAPPING, LECHUGUILLA CAVE, CARLSBAD-CAVERNS-NATIONAL-PARK, NEW-MEXICO
    CUNNINGHAM, KI
    LAROCK, EJ
    [J]. HEALTH PHYSICS, 1991, 61 (04): : 493 - 500
  • [9] CAVE CLIMATE - ASSESSMENT OF AIR-FLOW AND VENTILATION
    DEFREITAS, CR
    LITTLEJOHN, RN
    CLARKSON, TS
    KRISTAMENT, IS
    [J]. JOURNAL OF CLIMATOLOGY, 1982, 2 (04): : 383 - 397
  • [10] Using the entropy of curves to segment a time or spatial series
    Denis, A
    Crémoux, F
    [J]. MATHEMATICAL GEOLOGY, 2002, 34 (08): : 899 - 914
12345