Devonian of the isle of Rügen     

Karl Zagora 《Studia Geophysica et Geodaetica》1995,39(3):298-301

Summary In the Rügen area of northern Germany, Old Red Sandstones, ranging from Late Emsian to Givetian in age, unconformably overlie deformed Ordovician strata. The Middle Devonian Old Red passes conformably up into a Late Devonian carbonate facies and then into the Lower Carboniferous, apparently without a break.  相似文献   

Estimating groundwater recharge rates in the southeastern Holstein region, northern Germany     

Roland Otto 《Hydrogeology Journal》2001,9(5):498-511

In the southeastern Holstein region, located to the east of the metropolitan zone of Hamburg, northern Germany, a groundwater investigation program was conducted from 1984 to 2000 by the State Agency for Nature and Environment (Landesamt für Natur und Umwelt, LANU) of Schleswig-Holstein, Germany, with the aim of providing long-term, ecologically acceptable groundwater management plans for the region. The focal point of the investigation comprised the determination of groundwater recharge rates. The investigation method was based on the transfer of available lysimeter results from other regions to comparable regions within the area studied. With the help of lysimeter equations, potential amounts of percolation water were calculated. The groundwater recharge rate was then determined after subtraction of the surface runoff which was calculated for the entire area. All computations were performed with a spreadsheet program. Groundwater recharge rates were calculated for two areas. One consisted of roughly determining groundwater recharge rates for the total region (1,392 km²) of southeastern Holstein. The overall goal of these investigations was to identify potential areas of water exploitation. Areas in which groundwater recharge rates are high and groundwater outflow is low are particularly suited to water exploitation, since inflow rates into deeper aquifers are high. These areas are located on the flanks of the Elbe and Stecknitz River valleys. Subsurface groundwater runoff to these lowlands would be reduced through groundwater withdrawal. However, the resulting decline in shallow groundwater tables would be so small that it would have no detrimental ecological effects. Groundwater recharge rates were also calculated for a 110-km² area in the outskirts of Hamburg (Grosshansdorf model area) which is intensively developed for water supply. These investigations showed that the amount of groundwater recharge is already being withdrawn to a large extent. Approximately 65% of the recharge rate is currently withdrawn by the waterworks in this area, thus making further increases in exploitation rates unjustifiable from an ecological point of view. Electronic Publication  相似文献   

Sequential extraction procedure in columns—part 2: application of a new method     

F.?WisotzkyEmail author  N.?Cremer 《Environmental Geology》2003,44(7):805-810

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GIS-based determination of the mean long-term groundwater recharge in Lower Saxony     

F.?WendlandEmail author  R.?Kunkel  B.?Tetzlaff  G.?D?rh?fer 《Environmental Geology》2003,45(2):273-278

This paper presents the findings of a collaborative research project of the Geological Survey of Lower Saxony (NLfB) and the Programme Group Systems Analysis and Technology Evaluation (STE) of Research Centre Jülich on the GIS-based determination of the mean long-term groundwater recharge in Lower Saxony using high-resolution digital data (Dörhöfer and others 2001). The model calculations were performed on the basis of the water-balance model GROWA (Kunkel and Wendland 2002) with a spatial resolution of 100x100 m². The accuracy of the calculated groundwater recharge values for the period 1961–1990 was verified on the basis of data from gauging stations and displayed a good agreement between observed runoff values and model results.  相似文献   

Regions between imposed structure and internally developed response. Experiences with twin track regionalisation in post-socialist eastern Germany     

Tassilo Herrschel 《Geoforum》2007,38(3):469-484

This paper investigates the dual nature of regionalisation between imposed institutionalised territoriality and self-made ‘ad hoc’ collaborative regional arrangements between localities. This involves, as the paper sets out to show, different, but concurrent imagineerings of ‘regions’ to two audiences - within and without a defined region. They are applied to the same territory, albeit with different images and sets of actors for internal (local) and external (national/international) consumption. These developments are examined within the context of the ‘new regionalism’ debate, in particular the notion of a replacement of ‘old’ through ‘new’ regionalism as a sequence. This duality of region making challenges the frequently somewhat simplistic presumption of regions forming as one complete entity, ‘out there’ to compete on a global market. They also have to fight for their recognition internally, but with different arguments, rationales and policies. This means that the possibility of overlapping single purpose ad hoc formed regions, as postulated under the new regionalism, needs to take into account the likelihood of several meanings of one and the same territory. The examples demonstrate that the two possibilities overlap - multi-territoriality and multi-meanings of (new) regionalism. The paper uses the example of post-unification eastern Germany, where in 1990 a completely new set of traditional regions was established, implementing a 1960s-derived western German model. Since this common starting point, strong economic, cultural and geographic differences have emerged, leading not only to policy adjustments, but also changes to the understanding of regionalisation and regional policy, and the actors involved.  相似文献   

Dating of lower terrace sediments from the Middle Rhine area, Germany     

Sung-Won Choi  Frank Preusser  Ulrich Radtke 《Quaternary Geochronology》2007,2(1-4):137-142

Modern and known-age Pleistocene fluvial sediments were investigated by optical dating of quartz to test the suitability of the approach for dating deposits from the deeply incised Middle Rhine Valley. Samples from modern flood sediments revealed skewed distributions indicating different residual levels of equivalent dose (D_e) within the different aliquots. Nevertheless, a substantial number of aliquots from the modern deposits reflect D_e values close to zero. For the Pleistocene samples, optical ages are in general consistent with age control given by the presence of the Laacher See Tephra and radiocarbon dating. However, some samples overestimate the known age by a few thousand years when using the arithmetic mean. This is apparently explained by including aliquots in the determination of mean D_e where the optical signal was incompletely bleached at deposition. The most difficult issue in this context is identifying a suitable approach that can distinguish between the variability of D_e due to partial bleaching and microdosimetry. However, even when considering these limitations it appears that optical dating will by a quite suitable method to date Pleistocene sediments from such a complex fluvial environment, especially when focusing on a precision scale beyond a few thousand years.  相似文献   

Three-dimensional sedimentary architecture of Quaternary sand and gravel resources: a case study of economic sedimentology (SW Germany)     

Boris Kostic  M. Peter Süss  Thomas Aigner 《International Journal of Earth Sciences》2007,96(4):743-767

Quaternary sands and gravels form important, yet often highly heterogeneous economic deposits. Detailed 3-D analysis of the sedimentary structure and stratigraphy of these deposits allows for an accurate estimation of exploitable material. This paper presents a case study in SW Germany reconstructing the 3-D distribution of glacial sediments based on a high-resolution, process-orientated sedimentary facies classification and lithostratigraphy integrated within the geo-modelling package gOcad. Situated along the maximal ice-extent of the Rhine glacier during the last glaciation, the study area is characterised by a morphologically prominent terminal moraine and its associated sandur, which form the stratigraphically youngest sediments of a glacial basin, partially exposed in two gravel pits. These outcrops helped to reconstruct the complex sedimentary architecture of the northern part of the glacial basin. The regional analysis is based on core data, as well as geoelectric and geomagnetic surveys. All data were integrated into km-scale, high-resolution geological 3-D models, depicting the large-scale dynamics of multiple glacier advances and retreats during the Early to Late Pleistocene. These models allow quantifying the thickness and volume distribution of exploitable sandy gravel and help to evaluate the occurrence of non-exploitable interbedded diamicton horizons. The high quality and quantity of gravels particularly north of the terminal moraine classifies the investigated area as very prospective for raw materials exploitation in the future.  相似文献   

德国降水预报产品的应用和检验     

巴哈古丽  赵战成 《沙漠与绿洲气象(新疆气象)》2007,1(4):27-30

利用德国降水预报输出的24和48h降水预报产品,对2005年1—12月巴音郭楞蒙古自治州(简称巴州,下同)9个气象站分别进行了降水预报效果的检验分析,统计分析其在各月、各季、年的降水预报能力,得出其空报率较大,准确率和漏报率较低,但对巴州南部地区的大降水天气有一定的指导意义。  相似文献   

德国饮用水水源保护区的建立与保护   总被引：33，自引：1，他引：32  

李建新 《地理科学进展》1998,17(4):90-99

在德国,饮用水被确定为生活中的第一物质材料,饮用水水源保护区的建立与保护是一项法律程序。德国人经过１００多年的长期实践,迄今为止已建立近２００００个饮用水水源保护区,在水源地保护方面积累了大量经验,被欧美工业国吸收采纳。本文介绍了德国饮用水水源保护区的政策、规范与模型;保护区的划定原则与方法,以及利用岩石土壤对水污染的过滤净化能力或者水体自然净化功能,分区分级保护和利用水源保护区的实用哲学。本文还描述了全流域生态系统保护与水源保护区的关系,东德与西德水源保护工作的差距。  相似文献   

Double transformation at the eastern border of the EU: the case of the Euroregion pro Europa Viadrina     

H. Bertram 《GeoJournal》1998,44(3):215-224

One of the major means to foster European integration is the establishment of border spanning regions (‘Euroregions’). This is particularly important on the Eastern borders of the EU, e.g. in Eastern Germany. There, however, a double transformation to post-socialist society is taking place, both inside and outside the EU. Tensions arise between objectives on local and higher political levels, intensified by totally different economic structures and access to EU funds on both sides of the border. This is particularly true for the case of the emerging Euroregion Viadrina. Problems in preserving old industrialised localities in East Germany (e.g. steel) and attempts to resurrect the urban fair place Frankfurt/Oder, clash with transition in agriculture and consumer industries and with new concepts in tourism development and environmental protection in the Polish border zone. In region building, political, economic and ideological goals compete with each other. Local initiatives and higher political governance may both support and hamper each other. The same holds true for the interdependence of cultural integration and economic development. The paper concludes that regional economic development can only be expected if, via the building of the Euroregion, the interplay of these factors leads to compromise and harmonization between the different parties involved. This revised version was published online in August 2006 with corrections to the Cover Date.  相似文献