| Abstract: | 222Rn concentrations and meteorological parameters were measured at 4- h intervals over a 2-y period in Mystery Cave, southeastern Minnesota. Continuous radon monitors and meteorological sensors connected to data loggers were installed at several locations along commercial tour routes. 222Rn concentrations ranged as high as 25 kBq m-3 in summer and 20 kBq m-3 in winter. Average winter concentrations were lower than summer by at least a factor of two. Seasonal radon variations were correlative with outside air temperatures. During the winter, radon concentrations were observed to fluctuate periodically by factors of 20 or more in under 24 h. Both the long- and short-term variations are correlative with temperature- induced mixing of cave air with surface air. |
| Genre: | Article |
| ProdID: | 70019651 |
| Citation Author: | Lively, R. S.; Krafthefer, B. C. |
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| Citation End Page: | 594 |
| Citation Issue: | 4 |
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| Citation Language: | English |
| Citation Larger Work Title: | Health Physics |
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| Citation Number Of Pages: | 5 |
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| Citation Search Results Text: | 222Rn variations in Mystery Cave, Minnesota; 1995; Article; Journal; Health Physics; Lively, R. S.; Krafthefer, B. C. |
| Citation Start Page: | 590 |
| Citation Volume: | 68 |
| Citation Year: | 1995 |
| Type: | citation/reference |
| Text: | 222Rn variations in Mystery Cave, Minnesota; 1995; Article; Journal; Health Physics; Lively, R. S.; Krafthefer, B. C. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Sun, 1 Jan 1995 00:00 -0600 |
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