践行“四力” 追梦新时代——以鄞州日报《天南海北鄞州人》专栏报道为例

习近平总书记曾经说:'基层跑遍、跑深、跑透了,我们的本领就会大起来。'确实,要克服'本领恐慌',新闻工作者只有不断增强'脚力、眼力、脑力、笔力',深入基层一线,秉承社会责任,才能写出更多有思想有深度有品质的新闻报道。从2018年9月起,鄞州日报推出专栏《天南海北鄞州人》,一次次走出鄞州,行程近两万公里,追寻天南海北的鄞州籍杰出人才,就是一次践行'四力'的生动实践。

最美的风景

我是一个喜欢亲近花草、触摸大自然的人,所以也就非常喜欢旅行。因为旅途中的时光是最美好的,没有什么会打扰你清静闲灵的心,你不用为什么事而兴奋,也不用为什么事而苦恼,你可以遇见一群互不相识的人,然后天南海北地一路海侃.

Estimation of potential distribution of gas hydrate in the northern South China Sea

Gas hydrate research has significant importance for securing world energy resources, and has the potential to produce considerable economic benefits. Previous studies have shown that the South China Sea is an area that harbors gas hydrates. However, there is a lack of systematic investigations and understanding on the distribution of gas hydrate throughout the region. In this paper, we applied mineral resource quantitative assessment techniques to forecast and estimate the potential distribution of gas hydrate resources in the northern South China Sea. However, current hydrate samples from the South China Sea are too few to produce models of occurrences. Thus, according to similarity and contrast principles of mineral outputs, we can use a similar hydrate-mining environment with sufficient gas hydrate data as a testing ground for modeling northern South China Sea gas hydrate conditions. We selected the Gulf of Mexico, which has extensively studied gas hydrates, to develop predictive models of gas hydrate distributions, and to test errors in the model. Then, we compared the existing northern South China Sea hydrate-mining data with the Gulf of Mexico characteristics, and collated the relevant data into the model. Subsequently, we applied the model to the northern South China Sea to obtain the potential gas hydrate distribution of the area, and to identify significant exploration targets. Finally, we evaluated the reliability of the predicted results. The south seabed area of Taiwan Bank is recommended as a priority exploration target. The Zhujiang Mouth, Southeast Hainan, and Southwest Taiwan Basins, including the South Bijia Basin, also are recommended as exploration target areas. In addition, the method in this paper can provide a useful predictive approach for gas hydrate resource assessment, which gives a scientific basis for construction and implementation of long-term planning for gas hydrate exploration and general exploitation of the seabed of China.

Carbon and oxygen isotope characteristics of foraminiferan from northern South China Sea sediments and their significance to late Quaternary hydrate decomposition

Carbon and oxygen isotope and dating analyses of foraminiferan in sediment cores collected from three different areas of the northern slope of the South China Sea were conducted, in order to examine the records of the gas hydrate decomposition events since the late Quaternary under the conditions of methane seepage. The results show that： 1） the δ13C values of the benthic foraminiferan Uvigerina spp. （size range of 0.25-0.35 ram） are from -0.212% to -0.021% and the δ180 values of the planktonic foraminiferan Globigerinoides ruber （size range of 0.25-0.35 ram） are from -0.311% to -0.060%; 2） three cores （ZD2, ZD3 and ZS5） from the bottom of a hole are aged for 11 814, 26 616 and 64 090 a corresponding to the early oxygen isotope stage （MIS） Ⅰ, Ⅲ and Ⅳ final period, respectively; 3） a negative-skewed layer of carbon isotope corresponds to that of MIS II （cold period）, whose degree of negative bias is -0.2%0; and 4） the δ13C compositions of foraminiferans are similar to those of the Blake Ridge and the Gulf of Mexico sediments of the late Quaternary. According to the analysis, the reasons for these results are that the studied area is a typical area of methane seep environment in the area during MIS II due to the global sea-level fall and sea pressure decrease. Gas hydrate is decomposed and released, and a large number of light carbon isotopes of methane are released into the ocean, dissolved to inorganic carbon （DIC） pool and recorded in the foraminiferan shells. A pyrite layer developed in the negative bias layers of the foraminiferans confirms that the δ13C of foraminiferans is more affected by methane and less by the reduction of marine productivity and early diagenesis. The use of foraminiferan δ13C could accurately determine late Quaternary hydrate release events and provide evidence for both reconstructing the geological history of methane release events and exploring natural gas hydrate.

Accumulation and exploration of gas hydrate in deep-sea sediments of northern South China Sea

The large deep-sea area from the southwestern Qiongdongnan Basin to the eastern Dongsha Islands,within the continental margin of northern South China Sea,is a frontier of natural gas hydrate exploration in China.Multiform of deep-sea sedimentations have been occurred since late Miocene,and sediment waves as a potential quality reservoir of natural gas hydrate is an most important style of them.Based on abundant available data of seismic,gravity sampling and drilling core,we analyzed the characteristics of seismic reflection and sedimentation of sediment waves and the occurrence of natural gas hydrate hosted in it,and discussed the control factors on natural gas hydrate accumulation.The former findings revealed the deep sea of the northern South China Sea have superior geological conditions on natural gas hydrate accumulation.Therefore,it will be of great significance in deep-sea natural gas hydrate exploration with the study on the relationship between deep-sea sedimentation and natural gas hydrate accumulation.

Comment on "Estimation of potential distribution of gas hydrate in the northern South China Sea" by Chunjuan Wang et al.

Herein we would like to comment on the paper ＂Estimation of potential distribution of gas hydrate in the northern South China Sea＂ by Wang et al. 2010 in Chinese Journal of Oceanology and Lirnnology, 28（3）： 693-699. The purpose of this comment is to point out that the given probabilities of gas hydrate occtwrence in the northern Zhujiang Mouth Basin and the Yinggehai Basin in the figure of Wang et al. （2010） are improper. After introducing our work of estimation of gas hydrate stability distribution in the northern South China Sea, we suggest that Wang et al. （2010） dismissed the basic P-T rule for the existence of gas hydrate. They should consider more the variables of water depth, seabed temperature and geothermal gradient in their gas hydrate distribution model in future studies.

我与传记文学的不解之缘

一今年4月,收到中华书局寄来的我同张俊彪先生主编的《大中华二十世纪文学史》和《大中华二十世纪文学简史》,感到无比的欣喜。一下子想起,我从1976年11月开始写《随卫敬爱的周副主席》,到现在已三十八年。这些年来,我同传记文学真是结下了不解之缘:为写好革命家、作家和艺术家的传记,我天南海北地奔走,绞尽脑汁地构思,殚精竭虑地写作,反反复复地修改;为撰写传记文学的理论专著,也是费尽心力。

最正宗的济南油璇

你知道文学大师季羡林喜欢的小吃吗?就是济南油,一种旋涡状的葱油小饼,最早出现在清时。如今,小的油璇不仅是一项省级非物质文化遗产,还是泉城一张美食名片,让天南海北的游客争相品尝。要想吃最正宗、地道的油璇,当属入选省级非遗的南老字号'弘春美斋'油璇店。其创始人卢利华是济油璇制作技艺的代表性传承人,制作油璇已有37年。个油璇从制作到出炉有12道工序,不管是葱油的、油的,还是肉松的,都色泽金黄、内软外酥、香味扑鼻。

我不再是肉神

直到十一岁,我才吃到这辈子第一个汉堡包。其实也不难想象,我出生的南方小县城,面积小,人口少。县城小到每年春节扫墓,都能在公墓大门口碰到好几个同班同学。所以十一岁能吃上汉堡,在我们班已经相当时髦。这要归功于我妈,她年轻的时候卖烟,天南海北基本都去过,那几年分管东北三省的业务,常驻北京办事处。十一岁那年,我刚刚开始发育,挑肥拣瘦,有的衣服开始不爱穿。

Controlling factors for gas hydrate occurrence in Shenhu area on the northern slope of the South China Sea

Temperature and pressure on seafloor of the northern slope in the South China Sea are suitable for gas hydrate formation, but bottom simulation reflector (BSR), an indication of gas hydrate occurrence, only occurred in limited areas of the slope. Drillings in the BSR-distributed area (the District S) on the northern slope of the South China Sea suggested that gas hydrate only occurred at Sites SH2, SH3, and SH7 with high saturation (up to 20%-40%), and there is no hydrate at Sites SH1 and SH5 although the distance between SH1 to SH3 is only 500m. In this paper, we investigated seafloor gradient, fault development, temperature, and pressure in the District S on the northern slope of the South China Sea to understand the possible factors con- trolling BSR distribution and gas hydrate occurrence. The District S is a structurally fractured continental slope zone and its seafloor gradient varied greatly. The BSR-occurred areas have an average gradient of 19.89×10 2 whereas the BSR-free zone has the average gradient of 10.57×10 2 . The calculated relative structural intensities from fault densities and displacements show that the BSR-distributed areas tend to occur in the areas with a moderately high structural intensity, where faults frequently developed close to the seafloor that are possibly favored for lateral migration of gases. On the basis of temperatures and pressures at drilling sites, hydrate-occurred Sites SH2, SH3, and SH7 are located within the thermodynamically stable area for methane hydrate, and hydrate-absent Sites SH1 and SH5 are out of the thermodynamically stable area for methane hydrate formation, suggesting that both BSR and the thermodynamic stability are necessary for hydrate occurrence in the subsurface.