廊坊雾、霾日的地温特征及地震活动的可能影响

郭立平; 王梦; 王鹤婷

doi:10.12153/j.issn.1674-991X.20200255

廊坊雾、霾日的地温特征及地震活动的可能影响

doi: 10.12153/j.issn.1674-991X.20200255

河北省廊坊市气象局

详细信息

作者简介:
郭立平(1970—),女,正高级工程师,主要从事天气预报及环境气象条件预报研究, ggllpp_lf@126.com

中图分类号: X513,P315.5
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出版历程
- 收稿日期: 2020-10-25
- 刊出日期: 2021-09-20

Ground geotemperature characteristics of fog and haze days and the possible effects of seismic activities in Langfang City

Langfang Meteorological Bureau, Hebei Province

摘要

摘要: 利用2009—2018年廊坊市雾、霾、浅层地温、风向、风速、相对湿度等观测资料以及廊坊市Ms2.0级及以上地震资料,采用Yamamoto统计分析、数理统计等方法对廊坊市雾、霾日的浅层地温特征及地震活动的影响进行分析。结果表明:1)廊坊市雾、霾发生、分布既有相似的特点,也有不同之处。雾的月分布呈单峰型,峰值月为12月;霾的月分布呈双峰型,峰值月为7月和1月,最大值出现在7月。2)雾、霾的分布、形成与浅层地温偏高关系密切。雾、霾同期均明显偏多时段,地温偏高特征十分显著,地表及地下10、20、40 cm地温正距平比例均达70%以上,其中地表达80%以上。3)雾、霾日及雾、霾混合日地温特征存在差异。雾、霾混合日地温正距平比例最高,地温偏热层相对深厚;霾日形成前地温有持续偏高特征;雾日地温正距平比例较霾日高。4)地震发生前后地温有偏高特征,地震活动次数多,地温偏高特征相对持久。廊坊市方圆50 km内地震活动对廊坊市地温升高,雾、霾增多及分布异常有一定影响,地震活动引起的地温升高为雾、霾的形成提供了有利条件,也为降雨、降雪等天气的产生提供了一定的基础热力条件,雨雪天气可以造成一段时间的地温下降。
- 雾 /
- 霾 /
- 地温 /
- 地震活动 /
- 廊坊市
Abstract: According to the meteorological observation data about fog, haze, shallow geotemperature, wind direction, wind speed and relative humidity and seismic data of magnitude Ms2.0 or above in Langfang City from 2009 to 2018, the deep analysis was carried out on the characteristics of shallow geotemperature of fog and haze days, and the effects of seismic activities by Yamamoto statistical analysis and mathematical statistics. The results showed that: 1)The occurrence and distribution of fog and haze in Langfang City had both similarities and differences. The distribution of fog fluctuated in a single peak, with peak value in December, while that of haze was bimodal, with peak value in July and January, and July had the biggest value. 2)The distribution and formation of fog and haze were greatly connected with high shallow geotemperature. Once the fog and haze were highly severe at the same time, the characteristics of high geotemperature would be very significant. The average proportion of positive anomalies in geotemperature of 0, 10, 20 and 40 cm under the ground reached over 70%, and the surface temperature was above 80%. 3)There were differences in daily geotemperature characteristics on fog, haze days and their mixture days. The average proportion of positive anomalies in daily geotemperature of mixture of fog and haze was the highest, and the geothermal layers were relatively thick. There was a continuously increase in geotemperature before the formation of haze. And the average proportion of positive anomalies in geotemperature on fog days was higher than that on haze days. 4)The geotemperature was relatively high before and after the earthquake. The more seismicity, the more persistent the characteristic of relatively high geotemperature. The seismicity in 50 km of Langfang City was related to the increase of geotemperature, fog, haze and abnormal distribution of them. The increase of geotemperature caused by seismicity provided beneficial conditions for the formation of fog and haze, and also provided certain basic thermodynamic conditions for the formation of weathers including rainfall and snowfall. The rainfall and snowfall could lead to the decrease of geotemperature for some time.
- fog /
- haze /
- geotemperature /
- seismicity /
- Langfang City

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