Kotrappa Payasada, Paul Prateek, Stieff Alex, Stieff Frederick
Rad Elec, Inc., 5716-A, Industry Lane, Frederick, MD 21704, USA.
Radiat Prot Dosimetry. 2013 Dec;157(3):455-8. doi: 10.1093/rpd/nct159. Epub 2013 Jun 23.
Superstorm Sandy affected much of the US East Coast extending over 1800 km. It passed over the test location in the State of Maryland on 29 October 2012. Being 350 km away from the regions of highest intensity the storm was of lower intensity at the test location. Continuous radon monitors and passive radon monitors were used for the measurement. The test location was the basement of a single family home representing the indoor concentration. A partially opened garage of the same test home represented the outdoor radon concentration. In 24 h, the atmospheric pressure dropped from 990 to 960 mbar and the indoor radon concentration increased from 70 to 1500 Bq m(-3) and returned to the normal of 70 Bq m(-3) at the end of the storm. Throughout the storm, the outdoor radon concentration was not significantly affected. Probable reasons for such surprisingly large changes are discussed. However, the outdoor temperature dropped from 13°C to 7°C during the radon peak.
超级风暴桑迪影响了美国东海岸大部分地区，覆盖范围超过1800公里。它于2012年10月29日经过马里兰州的测试地点。该风暴距离强度最高的地区有350公里，因此在测试地点强度较低。测量使用了连续氡监测仪和被动式氡监测仪。测试地点是一栋独栋住宅的地下室，代表室内浓度。同一测试住宅的一个部分开放的车库代表室外氡浓度。在24小时内，大气压力从990毫巴降至960毫巴，室内氡浓度从70贝克勒尔每立方米增加到1500贝克勒尔每立方米，并在风暴结束时恢复到70贝克勒尔每立方米的正常水平。在整个风暴过程中，室外氡浓度没有受到显著影响。文中讨论了出现如此惊人巨大变化的可能原因。然而，在氡浓度达到峰值期间，室外温度从13摄氏度降至7摄氏度。
