Based on the results of field geological surveys and stratigraphic dating data, the paleo-sandblows and their represented paleoseismic events developed in the upper strata of the Taoyuan Basin were analyzed. More than ten paleo-sandblow traces were outcropped in the 7-km-range from Taoyuan to Xialinong region in the Taoyuan Basin. The sandblows and their deposits are featured by mushroom-shape, umbrella-shape, sac-shape and skewed cup shape. Their large scale and wide distribution indicated that there was a strong sandblow eruption events related to paleoearthquake. The width of sandflow depositsis several meters, and the thickness is tens of centimeters to one meter. The largest one is 8 meters wide, and 1–1.5 m in the thickness. It is common to observe 1.0–4.5 m long, 0.25–0.35 m in diameter, and 0.8 m in width sand veins. The paleosol layer with good continuity is generally developed at the depth of 1.5–3.0 m below the ground, which is the ground surface at that time. These sand veins and sandflow deposits are generally developed above and below this layer. According to the 14C dating results of the top of the paleosol layer and the bottom of the overlying strata of the sandflow deposits, it is speculated that the time of the paleoseismic event forming the sandblows is 13030±40–12120±40 aBP, and its magnitude is at least greater than 7. The Chenghai-Binchuan fault was a strong active fault in the late Quaternary period, which triggered this Taoyuan earthquake.

Based on the field survey results, the geological and geomorphic evidences of Late Quaternary activity and paleoseismic events in Tongdian-Madeng basin section of Weixi-Qiaohou fault are studied. The results show that the segment is active during Holocene and dominated by dextral strike slip. Its horizontal slip rate is 1.8-2.4 mm/a, and vertical slip rate is 0.30-0.35 mm/a since the Holocene. The OSL ages of faulted strata revealed by Yushuiping trench are 5.1±0.6, 5.3±0.2, 7.5±0.5 and 10.3±0.9 ka respectively, belonging to Holocene accumulation. Several faults developed on T₂ terrace of a small river in Xiataiping offset all the strata under the modern loam layer, and the OSL age of the upper stratum is 5.3±0.6 ka. The activity of fault since Pliocene resulted in strong tectonic deformation of the Pliocene sediments, and its property also changed from thrust to dextral strike slip. Seismic phenomena such as seismic wedge, sand vein and soft sedimentary structural deformation are exposed at Xinmin, Gaichang and other trenches and the offset amount is mostly about 1 m. It is considered to be caused by the same seismic event, with an occurrence time of about 28000 aBP and a magnitude of seven.

This paper proposes a stance classification method on interactive text by incorporating background knowledge. This method retrieves relevant background knowledge texts from Wikipedia by using the interactive text as query. The retrieved background knowledge texts are encoded and then ultilized to learn the representation of relavent background knowledge through deep memory network for improving the representation learning of interactive text. The experimental results on three English online debate datasets show that the performance of interactive stance classification can be effectively improved by incorporating background knowledge through choosing the appropriate number of background knowledge embedding layers and the connection method of background knowledge embedding layer.

This study identifies the current situation of water pollution in the rivers, reservoirs and coastal waters in the Guangdong-Hong Kong-Macao Greater Bay Area, and analyzes the issues about urban water-logging as well as the changes in water volume in rivers and estuaries. The water pollution in the Bay Area is mainly caused by the intensive population and industrial activities in large cities. The imperfect sewage treatment system and management strategies have exacerbated the pollution. Water quantity problems mainly derived from the excessive encroachment of ecological water. By summarizing the development experience of the international advanced Bay Area, including improving legislation, raising standards, limiting emissions, and protecting the ecological water environment, this study proposes the following countermeasures for further management of water environment in the Guangdong-Hong Kong-Macao Greater Bay Area: 1) improving water use efficiency and strengthening sewage treatment; 2) promoting the construction of sponge cities; 3) controlling cofferdams and improving ecological protection; 4) accelerating the transformation of social economy.