Ambient Noise Tomography of Jinan: The Migration of Groundwater and the Formation of Geothermal Water

Abstract

Jinan is located in midwestern Shandong province, eastern China. As one of the most important cities of the Bohai Rim region and the lower reaches of the Yellow River, it is the provincial capital of Shandong, with a permanent population of more than 7 million. Jinan sits on the southeast edge of the North China Plain, on the northern edge of the central Shandong mountains, south of the Yellow River and north of the Taishan Mountain. The terrain is high in the south and low in the north: the altitude of the southern mountainous area is about 100-500 m, the altitude of the central tilted plain is about 20-100 m and the altitude on the northern alluvial plain in the middle and lower reaches of the Yellow River is below 20 m.Jinan is famous as the Spring City, with many famous springs being located in the urban region. On the one hand, these springs are important scenic spots and attract many tourists, but on the other, these springs are also disruptive factors in city construction (Zhang et al., 2017). Springs are associated with abundant groundwater and in Jinan, the groundwater has caused some troubles in the construction of underground transportation (Yang et al., 2012;Wang et al., 2018a). In recent years, the spring flow has declined a lot. Geological modelling has provided some suggestions for spring protection (Wu and Xu, 2005;Qian et al., 2006;Kang et al., 2011).In addition to spring water, the groundwater also exists in another form, that of geothermal water. There are plenty

A Comprehensive Study on the Hydrogeochemical and Isotope Characteristics and Genetic Mechanism of Geothermal Water in the Northern Jinan Region

“…Reservoir temperature was estimated by chemical geothermometry and validated by fluid-mineral equilibria calculations. The feasibility of different geothermometers was verified, indicating that quartz geothermometers were more suitable for the geothermal system [14,20]. However, the majority of these studies mainly focused on the southern section of the Qihe-Guangrao fault in NJR, limiting geothermal research in the northern segment of this fault.…”