Evidence for late Quaternary sea level change around St. Helena island, south Atlantic
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Radon concentration has been investigated in nine caves of the Mecsek Mountains, Hungary. Apart from radon concentration, underground temperature and pressure were detected by DATAQUA monitoring devices. Our primary aim was to gain information about boththe radon concentration levels and the convectional systems of these caves in order to study the characteristics of the researcharea. In addition, we intended to detect any differences between the caves either on the basis of the previous measurements or on account of their topo-morphological location. Data were comprehensively analyzed in relation to surface temperature and atmospheric pressure. The collected data showed that the caves located in the researcharea have particularly highradon concentrations. The highest values were measured in valley floor-positioned caves whereas the lowest ones in hilltop-positioned caves. In four cases the air convection systems of the studied caves differed from what would have been indicated by their topo-morphological location. In our study we summarize the convectional laws and uniqueness of the caves investigated.
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Abstract Almost seven hundred caves are known to exist in the Republic of Ireland and they are a significant component of the physical and cultural environment. However, the value of caves is largely unappreciated except by those with specialist interests. A database has been compiled, available in a searchable on‐line format, of all caves in the Republic. The database included not only locational and dimensional information but also attempts to ‘value’ individual caves in terms of, for example, their recreational, archaeological and ecological significance. Co. Clare has more caves and a greater total length of cave passage than the next three most important counties combined. No caves are known in five counties.
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The temperature and aerial microbes in Tianbao cave and in Dibao cave in different seasons and at different space positions were monitored and the results showed that: 1. Tianbao cave in all the four seasons, the highest temperature (18.26～21.69 ℃) at the middle part of the cave and the lowest temperature (16.78～20.18 ℃) in the deepest part of the cave; Dibao cave , the highest temperature at the bottom parts of the cave in winter (12.97 ℃) and in spring (15.45 ℃) and the highest temperature at the middle part of the cave in summer (19.32 ℃) and in autumn (18.33 ℃). The comparison of the two caves showed that Tianbao cave was comparatively driver and had higher temperature (0.97～3.81℃ higher in spring, summer and autumn and 4.51～9.36 ℃ higher in winter), which indicated that season change had less effects on Tianbao cave; 2. there was certain difference in microbial quantity and microbial distribution at different space positions (longitudinal direction)(microbial amount in Dibao cave: cave mouth the highest, then the middle part of the cave and then cave bottom; microbial amount in Tianbao cave: the middle part of the cave the highest and cave mouth the lowest). The mildew accounted for about 70 % of all microbes and bacteria accounted for about 25 % and there were few amounts of microzyme and actinomyceto. Microbial amount presented no evident difference in different seasons in Tianbao cave but evident difference in Dibao cave in different seasons; 3. bacteria was prevailing among all the microbes in the outside environment of Erlang liquor bank and the two liquor-making workshops and then mildew the second.
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