Zmazek B, Todorovski L, Zivcić M, Dzeroski S, Vaupotic J, Kobal I
Jozef Stefan Institute, 1000 Ljubljana, Slovenia.
Appl Radiat Isot. 2006 Jun;64(6):725-34. doi: 10.1016/j.apradiso.2005.12.016. Epub 2006 Feb 3.
Anomalies have been observed in the radon content of thermal spring water at the Italian-Slovenian border. To distinguish the anomalies caused by environmental parameters (air and water temperature, barometric and hydrostatic pressure, rainfall) from those ascribed solely to earthquakes with M(L) from 1.2 to 2.5 and epicentres, R(E), within 2R(D) (R(D)--Dobrovolsky's radius), two approaches have been used: (i) correlation between time gradients of radon concentration and hydrostatic pressure, and (ii) regression trees within machine learning programs. The regression trees approach has been improved by introducing additional environmental parameters and prolonging the measuring period.
在意大利与斯洛文尼亚边境的温泉水中，已观测到氡含量异常。为了区分由环境参数（空气和水温、气压和静水压力、降雨量）引起的异常与仅由震级为1.2至2.5且震中在2R(D)（R(D)——多布罗沃尔斯基半径）范围内的地震所导致的异常，采用了两种方法：(i) 氡浓度时间梯度与静水压力之间的相关性，以及 (ii) 机器学习程序中的回归树。通过引入额外的环境参数并延长测量期，对回归树方法进行了改进。
