继承性构造和新生构造并存发育的时空规律——兼论新生构造的油气勘探意义

继承性构造与新生构造并存有复杂的时空发育特征。分5种情况剖析了中国东部晚中生代—新生代盆地和扬子、塔里木、鄂尔多斯三大克拉通陆表海盆地继承性构造与新生构造并存的大量实例并总结了其时空发育规律。新生构造的发育主要受邻侧造山带演化的控制,还可能受基底构造或先存构造形成的边界条件的约束,故继承性构造与新生构造并存发育的研究思路应是“寻根溯源”。新生构造的油气勘探意义,集中表现在控制(生油-)储油层、输导体系和构造圈闭的发育。据此分析了今后东部陆相盆地和海相地层的油气勘探靶区。     

麦垛山煤矿副立井井筒检查孔施工技术及涌水量预算

针对井简俭查孔施工中的技术难点,采取了钻前修建钻错底座,使用合理的钻具组合,强化套管作业过程,按照不同地层．选用不同的泥浆配方的技术措施,从而使井筒检查孔的质量达到了设计及规范的要求。根据抽水试验成果．运用稳定流的裘布农公式进行水文地质参数的计算,采用大井法进行井筒涌水量的预算。预算井筒涌水量为6454．96m^3／d．该成果与流量测井结果较为吻合,可以作为建井工程设计的依据。     

Assessment and analysis of rockfall-caused tree injuries in a Turkish fir stand: A case study from Kastamonu-Turkey

Rockfalls can cause serious damage to people,property,facilities and transportation corridors.Furthermore,rockfalls are major hazards in mountain areas with negative impacts on individual trees and forested ecosystems.We conducted a study of rockfall events on 117 mapped(91% of total trees in the stand with1.3 m in height and5 cm diameter at breast height)Turkish fir trees(Abies bornmuelleriana Mattf.)in a stand within the Kayaarkasi-Topular Village,Inebolu district, Kastamonu province of Turkey.The study site of 0.35 Ha is located on the transition zone of frequently passing rockfall fragments(～40 cm in diameter) generally causing healable injuries.Parameters of trees and injuries were recorded and analysed as to injury number,height and size.Bivariate correlation analysis were used to investigate the relationships between:a)diameter at breast height and number of injuries per tree,b)diameter at breast height and total injury size,c)the number of injuries and total injury size and d)the number of injuries per tree and distance from the source of the rockfall area.Results indicate that the average height of injury,average number of injuries and average injury area to be 81.3 cm(STDEV:49.8),7.46(STDEV:4.4)and 628.6 cm2 (STDEV:678.2),respectively.In total 84% of all injuries were recorded within 160°sector at the upslope side of trees and callus tissue that had closed wounds was observed in 79.1% of all injuries. Furthermore 14.5% of injured trees had callus tissue in the process of closing wounds while 6.4% of injuries had not formed any callus tissue.The most common injury types were bark and wood injuries. Bivariate correlation analysis indicated strong relationships between diameter at breast height and the number of injuries(rs=0.524),injury number and total injury area(rs=0.653)and distance from rockfall area and injury numbers relations(rs=-0.518).A weaker relationship was found between diameter at breast height and total injury area(rs=0.363).These results indicate that bigger trees are more prone to rockfall injuries.As expected,trees further from the rockfall area seem to be less prone to rockfall injuries.From our results,it can be inferred that the protection of people and property can be increased through the maintanance of forest in areas immediately below areas prone to rockfall.This stand is still managed in selective forest management system.In order to protect the settlement at the deposition zone it has to manage for protective goals with uneven-aged and multilayered stand structure.     

大兴安岭北部地区落叶松和白桦树稀土元素分布特征

大兴安岭北部的落叶松和白桦树对稀土元素Eu选择吸收性十分明显.Eu的生物吸收系数是其它稀土元素的20倍以上.落叶松和白桦树稀土元素均具有明显的铕正异常.落叶松和白桦树对二价金属元素Zn、Sr也具有强烈的摄取能力,而对一价和高价金属元素吸收能力较弱.土壤的稀土元素不是影响植物中稀土元素分布特征的重要因素.该区落叶松和白桦树稀土元素分布特征与水-土壤-植物系统的物理化学条件具有密切的关系.     

透地合成脉冲雷达：动态范围和工作方法

刻划透地雷达（ＧＰＲ）系统的主要参数是它的动态范围，动态范围表征了系统的穿透潜力，本文的目的是给出计算和比较雷达系统的动态范围的方法，这一点是利用与匹配滤波接收机原理有关的雷达方程来实现的，将脉冲雷达动态范围与合成脉冲雷达的动态范围进行比较，结论是由作者所在的机构开的合成脉冲雷达系统的动态范围比商业现成的ＧＰＲ系统高４０ｄＢ，合成脉冲ＧＰＲ系统的潜在动态范围大于２００ｄＢ。     

大气的能量谱和风速谱

本文提出了在大气体系中是否存在类似麦克斯韦提出的分子速率分布和普郎克提出的黑体辐射光谱那样的问题,即对全球大气是否有稳定的风速谱和能量谱问题. 本文给出了大气的风速谱和各种能量谱.指出它类似于统计物理中常见的分布形态.这不仅对认识大气规律有重要意义,也可用于数值天气预告和气候变迁研究中.     

微机图象报路远程传输系统

全国省级气象台均有卫星云图地面接收设备,利用微型计算机处理卫星云图的技术也已广泛应用,但由于这些设备价格较高,多数地区气象台还没有能力配置。为了更好地发挥省台卫星云图资料的作用,提高经过再处理云图资料的利用率,我们用 APPLEⅡ微机在卫星云图实时数字化处理的基础上,进行了二次性开发,设计建立了微机伪