排序方式： 共有11条查询结果，搜索用时 156 毫秒
1.
Herbin J Remmer J 《Revue de géographie alpine / publieé par l'Institute de géographie alpine (Université de Grenoble)》1984,72(1):21-40
Population trends in the German and Austrian Alps between 1971 and 1981 are described. The effects of commune size, tourism, and altitude on population dynamics are considered. 相似文献
2.
An analysis is made of the results from all repeated gravity measurements of the Fennoscandian land uplift gravity line 63°. The line is, thereby, divided into two separate parts: one part west of the land uplift maximum, and the other part east of the land uplift maximum. A statistically significant change of gravity is found both for the western part and the eastern one. Both parts give a relation between gravity change and land uplift of about ?0.22μgal/mm. 相似文献
3.
4.
Savage Cory A. M. Remmer Casey R. Telford James V. Kay Mitchell L. Mehler Eva Wolfe Brent B. Hall Roland I. 《Journal of Paleolimnology》2021,66(3):297-312
Journal of Paleolimnology - The oxygen isotope composition (δ18O) of aquatic cellulose extracted from lake sediment cores has long been used to reconstruct past hydrological responses to... 相似文献
5.
Ole Remmer 《Journal of Geodesy》1994,69(1):21-25
Despite the noisy character of the data in the new North American levelling net (Zilkoski et al. 1989) it is quite easy to see the refraction corrections mirrored in the polygon closing errors if one takes only those polygons with sufficiently high refraction corrections. The following table illustrates this point. In the table the first column denotes the limit of the accumulated refraction corrections (found from temperature measurements) along a polygon, that is only polygons where the refraction correction exceeds this limit participate in the analysis. The second column is the estimate of the correlation coefficient between refraction corrections and the closing errors of the polygons while the third column is the significance level in the conventional student-test of whetherr is different from zero. 相似文献
6.
7.
Ole Remmer 《Journal of Geodesy》1985,59(1):68-70
This note gives a new, short and non-recursive formula for Meissl’s smoothing coefficients β?. 相似文献
8.
Casey R. Remmer Tanner Owca Laura Neary Johan A. Wiklund Mitchell Kay Brent B. Wolfe Roland I. Hall 《水文研究》2020,34(2):303-320
Hydrological monitoring in complex, dynamic northern floodplain landscapes is challenging, but increasingly important as a consequence of multiple stressors. The Peace-Athabasca Delta in northern Alberta, Canada, is a Ramsar Wetland of International Importance reliant on episodic river ice-jam flood events to recharge abundant perched lakes and wetlands. Improved and systematic monitoring of landscape-scale hydrological connectivity among freshwater ecosystems (rivers, channels, wetlands, and lakes) is needed to guide stewardship decisions in the face of climate change and upstream industrial development. Here, we use water isotope compositions, supplemented by measurements of specific conductivity and field observations, from 68 lakes and 9 river sites in May 2018 to delineate the extent and magnitude of spring ice-jam induced flooding along the Peace and Athabasca rivers. Lake-specific estimates of input water isotope composition (δI) were modelled after accounting for influence of evaporative isotopic enrichment. Then, using the distinct isotopic signature of input water sources, we develop a set of binary mixing models and estimate the proportion of input to flooded lakes attributable to river floodwater and precipitation (snow or rain). This approach allowed identification of areas and magnitude of flooding that were not captured by other methods, including direct observations from flyovers, and to demarcate flow pathways in the delta. We demonstrate water isotope tracers as an efficient and effective monitoring tool for delineating spatial extent and magnitude of an important hydrological process and elucidating connectivity in the Peace-Athabasca Delta, an approach that can be readily adopted at other floodplain landscapes. 相似文献
9.
O. Remmer 《Journal of Geodesy》1971,45(1):29-36
As it has been shown by Kubik it is possible to get an estimate,
, of the reciprocal of the weight-matrix in an adjustment problem. If we want to see whether this new estimate
differssignificantly from our a priori valueQ
0 it is necessary to know the distribution function of the elements
, the
’s being the elements of
. This distribution is found in the present article and it is shown that it is not identical with any of the distributions
well known from statistical textbooks. Furthermore a way of computing this new distribution is presented. Finally the connection
with the chi-square distribution is explored and it is proved that the chi-square-distribution may be used as an approximation
for a large number of over-determinations. 相似文献
10.
An analysis is made of the results from all repeated gravity measurements of the Fennoscandian land uplift gravity line 63°.
The line is, thereby, divided into two separate parts: one part west of the land uplift maximum, and the other part east of
the land uplift maximum. A statistically significant change of gravity is found both for the western part and the eastern
one. Both parts give a relation between gravity change and land uplift of about −0.22μgal/mm.
Paper presented at the 10th General Meeting of the Nordic Geodetic Commission, Helsinki 1986. (Addresses of the authors at the end of the article). 相似文献