调查南非坎戈洞穴中的氡浓度

IF 2.5 4区地球科学 Q3 ENVIRONMENTAL SCIENCES

Atmosphere Pub Date : 2024-09-18 DOI:10.3390/atmos15091133

Jacques Bezuidenhout, Rikus le Roux

{"title":"调查南非坎戈洞穴中的氡浓度","authors":"Jacques Bezuidenhout, Rikus le Roux","doi":"10.3390/atmos15091133","DOIUrl":null,"url":null,"abstract":"Radon concentrations in the tourist part of the Cango cave were measured using 25 strategically placed electret ion chambers. Airflow rates were also measured and found to be less than 1 m/s throughout the cave. An IDW interpolated radon concentration overlay was constructed using QGIS and overlayed on maps of the cave. The maximum radon concentration of 2625 Bq/m3 was measured in the Grand Hall, located in the central part of the cave following a narrow passage. The initial part of the cave near the entrance exhibited normal cave breathing characteristics, with radon concentrations of less than 300 Bq/m3. The deepest section of the cave, however, demonstrated an unexpected decrease in radon levels, temperature, and humidity. The average radon concentration in the Cango cave, measured at 1265 Bq/m3, is relatively low compared to other caves worldwide that need mitigation measures according to the International Commission on Radiological Protection (ICRP).","PeriodicalId":8580,"journal":{"name":"Atmosphere","volume":"13 1","pages":""},"PeriodicalIF":2.5000,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Investigating Radon Concentrations in the Cango Cave, South Africa\",\"authors\":\"Jacques Bezuidenhout, Rikus le Roux\",\"doi\":\"10.3390/atmos15091133\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Radon concentrations in the tourist part of the Cango cave were measured using 25 strategically placed electret ion chambers. Airflow rates were also measured and found to be less than 1 m/s throughout the cave. An IDW interpolated radon concentration overlay was constructed using QGIS and overlayed on maps of the cave. The maximum radon concentration of 2625 Bq/m3 was measured in the Grand Hall, located in the central part of the cave following a narrow passage. The initial part of the cave near the entrance exhibited normal cave breathing characteristics, with radon concentrations of less than 300 Bq/m3. The deepest section of the cave, however, demonstrated an unexpected decrease in radon levels, temperature, and humidity. The average radon concentration in the Cango cave, measured at 1265 Bq/m3, is relatively low compared to other caves worldwide that need mitigation measures according to the International Commission on Radiological Protection (ICRP).\",\"PeriodicalId\":8580,\"journal\":{\"name\":\"Atmosphere\",\"volume\":\"13 1\",\"pages\":\"\"},\"PeriodicalIF\":2.5000,\"publicationDate\":\"2024-09-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Atmosphere\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://doi.org/10.3390/atmos15091133\",\"RegionNum\":4,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Atmosphere","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.3390/atmos15091133","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}

引用次数: 0

摘要

使用 25 个战略性放置的驻极体离子室测量了坎戈洞穴旅游区的氡浓度。还测量了整个洞穴的气流速率，发现气流速率小于 1 米/秒。使用 QGIS 构建了 IDW 内插氡浓度叠加图，并将其叠加在洞穴地图上。氡浓度最高值为 2625 Bq/m3，测量地点是位于洞穴中部狭窄通道之后的大殿。洞穴靠近入口的最初部分显示出正常的洞穴呼吸特征，氡浓度低于 300 Bq/m3。然而，洞穴最深处的氡含量、温度和湿度却出现了意想不到的下降。根据国际辐射防护委员会（ICRP）的规定，Cango 洞穴的平均氡浓度为 1265 Bq/m3，与世界上其他需要采取缓解措施的洞穴相比相对较低。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Investigating Radon Concentrations in the Cango Cave, South Africa

Radon concentrations in the tourist part of the Cango cave were measured using 25 strategically placed electret ion chambers. Airflow rates were also measured and found to be less than 1 m/s throughout the cave. An IDW interpolated radon concentration overlay was constructed using QGIS and overlayed on maps of the cave. The maximum radon concentration of 2625 Bq/m3 was measured in the Grand Hall, located in the central part of the cave following a narrow passage. The initial part of the cave near the entrance exhibited normal cave breathing characteristics, with radon concentrations of less than 300 Bq/m3. The deepest section of the cave, however, demonstrated an unexpected decrease in radon levels, temperature, and humidity. The average radon concentration in the Cango cave, measured at 1265 Bq/m3, is relatively low compared to other caves worldwide that need mitigation measures according to the International Commission on Radiological Protection (ICRP).

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Atmosphere METEOROLOGY & ATMOSPHERIC SCIENCES-

CiteScore

4.60

自引率

13.80%

发文量

1769

审稿时长

1 months

期刊介绍： Atmosphere (ISSN 2073-4433) is an international and cross-disciplinary scholarly journal of scientific studies related to the atmosphere. It publishes reviews, regular research papers, communications and short notes, and there is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental and/or methodical details must be provided for research articles.