油气田遥感影像模型及油气综合远景预测研究   总被引：2，自引：0，他引：2  

谢青云  郭德方  包绍华  兰玉琦 《国土资源遥感》1994,5(4):30-36

本文以线性体、环形体的油气田地质意义分析为基础,通过线、环共生组合规律及油气地质多因素的综合分析,提出了3个油气田遥感预测模型。利用所建立的遥感模型及其它地学模型,在济阳坳陷地区以遥感信息为主进行了微机综合油气远景预测,提出了若干远景区。实践证明,利用遥感信息进行构造分析的找油方法,对石油勘探具有重要意义,它具有简便和勘探成本低等优点。  相似文献   

济南市城镇化与工业化耦合关系评价与分析     

朱艳硕  代合治  谢菲菲 《地域研究与开发》2012,31(1):70-73

以济南市为样本,基于该市改革开放后历年的统计数据,采用国际上常用的IU、NU标准值法判断其城镇化与工业化的关系并进行分析.研究发现,济南市城镇化的发展由过去的严重滞后于工业化逐步趋向于与工业化发展相协调的状态;不同城市的自然环境和区位条件有差别,城镇化和工业化的发展又具有一定的地域性和时序性.因此,以城市为对象,探讨其城镇化与工业化的关系,既能丰富这一领域的理论研究,又能为城市的城镇化和工业化进程提供实践参考.  相似文献   

2010年夏季北极海冰反照率的观测研究          下载免费PDF全文

章睿柯长青  谢红接孙波 《极地研究》2012,24(3):299-306

雪和海冰作为北极地区反照率最高的地表类型,可以将大部分入射辐射能量反射回天空,其表面反照率的变化对整个地表-大气辐射平衡系统和全球气候变化都会有重要影响。在2010年中国第4次北极科学考察期间用ASD光谱仪对北极太平洋扇区不同类型的海冰表面反照率进行了现场测量,观测时段为7月27日至8月23日,地理范围在72°18′-87°20′N和152°34′-178°22′W之间。观测结果表明积雪覆盖海冰的反照率最高,干雪覆盖时均值达到0.82,融化的湿雪覆盖时反照率会有一定程度地降低。夏季北极地区存在大量融池,融池海冰按颜色划分为白冰,蓝冰和灰冰,白冰的平均反照率为0.54,蓝冰的为0.31,灰冰的只有0.20,融池水的反照率只有0.16。融池是北极夏季反照率变化的重要原因。  相似文献   

Roadian–Wordian (Guadalupian, Middle Permian) global palaeobiogeography of brachiopods     

Shu-zhong Shen  Jun-fang Xie  Hua Zhang  G.R. Shi 《Global and Planetary Change》2009,65(3-4):166-181

A database of 4471 Roadian–Wordian (Guadalupian, Middle Permian) occurrences of 381 brachiopod genera in 44 different operational geographical units (stations) was analyzed by both Q-mode and R-mode quantitative methods. Four distinct brachiopod biogeographical realms and nine provinces, and 11 brachiopod associations are recognized. The Boreal Realm in the Northern Hemisphere includes the Verkolyman Province in the northern and northeastern Siberian Platform and the eastern European Province in the Ural seaway between the European and Siberian platforms. Both provinces are characterized by containing typical Boreal cold-water brachiopod associations. The Gondwanan Realm in the south also includes two provinces. The Austrazean Province in eastern Australia and New Zealand is probably the most stable province throughout the Permian and characterized by typical Gondwanan brachiopod associations. The Westralian Province centered in Western Australia is also characterized by typical Gondwanan brachiopods, but also demonstrates biogeographical links with the Tethyan stations. The Palaeoequatorial Realm located mainly in the palaeotropical zone contains highly diverse and abundant brachiopod faunas. Two regions/subrealms and four provinces are recognized within this realm. The North America Subrealm contains a distinct Grandian Province characterized by many endemic brachiopod genera and a few cold-water genera. East-central Alaska and Yukon Territory may constitute another brachiopod province. All the stations in the Tethyan Ocean (both Palaeotethys and Neotethys) constitute a distinct Asian–Tethyan Region/Subrealm and incorporate three different provinces. The Cathaysian Province is comprised of the stations in South China and its surrounding terranes/blocks and a few stations in the northern and western margin of the Palaeotethys. Two transitional provinces (Sino–Mongolian–Japanese Province and Cimmerian Province) in the northern and southern temperate zones are also recognizable. The brachiopod fauna from the Mino Belt in Japan is well distinguished from those from other regions, and is hence assigned to the palaeoceanic Panthalassan Realm. Principal coordinates analysis and minimum spanning tree analysis suggest that a latitude-related thermal gradient was the major control for the palaeobiogeography of Roadian–Wordian global brachiopod faunas and for the latitudinal of pattern of decreasing brachiopod generic diversities from the equator to the poles. In addition, geographic separation and oceanic currents may also have played some role in the spatial distribution of brachiopods during Roadian–Wordian times.  相似文献   

Orographic effects on South China Sea summer climate   总被引：1，自引：0，他引：1  

H. Xu  S.-P. Xie  Y. Wang  W. Zhuang  D. Wang 《Meteorology and Atmospheric Physics》2008,100(1-4):275-289

  相似文献   

Improving the vegetation dynamic simulation in a land surface model by using a statistical-dynamic canopy interception scheme     

梁妙玲  谢正辉 《大气科学进展》2008,25(4):610-618

Canopy interception of incident precipitation, as a critical component of a forest＇s water budget, can affect the amount of water available to the soil, and ultimately vegetation distribution and function. In this paper, a statistical-dynamic approach based on leaf area index and statistical canopy interception is used to parameterize the canopy interception process. The statistical-dynamic canopy interception scheme is implemented into the Community Land Model with dynamic global vegetation model （CLM-DGVM） to improve its dynamic vegetation simulation. The simulation for continental China by the land surface model with the new canopy interception scheme shows that the new one reasonably represents the precipitation intercepted by the canopy. Moreover, the new scheme enhances the water availability in the root zone for vegetation growth, especially in the densely vegetated and semi-arid areas, and improves the model＇s performance of potential vegetation simulation.  相似文献   

城市化对江苏气候变化影响的数值模拟个例分析   总被引：5，自引：3，他引：2  

解令运  汤剑平  路屹雄  占小红 《气象科学》2008,28(1):74-80

利用MM5模式对2003年夏季6、7两个月典型区域气候极端事件进行数值模拟,研究城市化急剧扩张对区域气候极端事件的影响和可能机制.研究发现:苏南及邻近地区城市化区域的扩张,会引起区域降水分布的变化.在城市化区域,降水将减少,而在城市化的下风区会有局地的降水增加;同时,在苏南城市化区域中,太湖等湖泊的影响也很重要,会加强其邻近地区局地降水强度.城市化区域的地面气温有明显的上升,对高温天气的作用更大.城市化也会影响地面风场,阻挡穿越城市化区域的风;苏南沿海城市化区域扩张,会使海陆风环流增强,加大了海面向陆面的风.城市化区域的潜热通量明显减少,而感热通量显著增加.城市化增暖产生的局地热源,使城市化区域及邻近地区局地环流发生变化,增强了低层城市化区域向周边辐散的强度.随着高度的增加,城市化的影响也越来越小.  相似文献   

华北夏季大气水汽输送特征及其与夏季旱涝的关系   总被引：9，自引：2，他引：7  

谢坤  任雪娟 《气象科学》2008,28(5):508-514

本文利用ECMWF再分析资料ERA40和中国160站的降水资料,分析了我国华北地区1958年-2002年夏季的大气水汽含量和水汽输送的基本气候特征,研究了华北夏季旱涝年的大气水汽含量和水汽输送异常情况,最后利用线性回归的方法探讨了该地区大气水汽含量和水汽输送的变化趋势.结果表明:华北地区夏季降水的大气水汽来源主要有3支:来自孟加拉湾的水汽、来自我国南海和西太平洋的水汽以及中高纬西风带的水汽输送.华北地区对流层低层以经向水汽输送通量为主,到了中高层则以纬向输送通量为主;与华北地区夏季旱涝密切相关的异常水汽输送主要是南海和西太平洋以及西风带水汽输送异常,华北地区南边界水汽输入异常和东边界水汽输出异常是造成华北夏季旱涝年水汽收支异常的主要原因;近半个世纪以来,伴随着华北干旱化的加剧,华北地区南边界输入的大气水汽呈现显著的减少趋势.  相似文献   

浙江省禽流感流行的风险期研究   总被引：1，自引：0，他引：1  

孙莉莉  吴利红  谢良生 《气象科技》2008,36(6):787-790

利用浙江省1971～2000年月平均气温、湿度等气候资料以及传播禽流感的迁徙候鸟经停浙江省的主要时段等资料和途径,并根据已有研究提出的适宜禽流感流行的温度等气象指标,对禽流感在浙江省流行的风险期进行分析和研究.结果表明:浙江省11月到次年3月的气候条件适宜禽流感病毒存活与传播.其中2～3月为浙江省禽流感流行的高风险时段,12月和次年1月为中风险时段.  相似文献   

《气象与环境科学》征稿简则     

赵祖强  高宾永  褚桂成  谢秋红 《气象与环境科学》2008,31(2):94-94

  相似文献