全文获取类型
收费全文 | 76篇 |
免费 | 0篇 |
国内免费 | 1篇 |
专业分类
测绘学 | 1篇 |
大气科学 | 6篇 |
地球物理 | 11篇 |
地质学 | 53篇 |
海洋学 | 1篇 |
天文学 | 4篇 |
自然地理 | 1篇 |
出版年
2022年 | 3篇 |
2021年 | 3篇 |
2019年 | 2篇 |
2018年 | 7篇 |
2017年 | 6篇 |
2016年 | 4篇 |
2015年 | 3篇 |
2013年 | 2篇 |
2012年 | 4篇 |
2011年 | 2篇 |
2010年 | 3篇 |
2009年 | 4篇 |
2008年 | 4篇 |
2007年 | 7篇 |
2006年 | 1篇 |
2005年 | 2篇 |
2003年 | 1篇 |
2002年 | 2篇 |
2001年 | 3篇 |
2000年 | 2篇 |
1996年 | 1篇 |
1995年 | 2篇 |
1994年 | 1篇 |
1991年 | 1篇 |
1977年 | 1篇 |
1971年 | 1篇 |
1964年 | 1篇 |
1961年 | 1篇 |
1925年 | 1篇 |
1924年 | 1篇 |
1921年 | 1篇 |
排序方式: 共有77条查询结果,搜索用时 46 毫秒
31.
The hydro-meteorological evaluation of a flood event in July 1997 (the Odra flood in Central Europe) demonstrated that new procedures to estimate design floods for the reservoir outflow structures in the Czech Republic (CR) were needed. Therefore, the techniques of the estimation of Probable Maximum Precipitation (PMP) were developed in a national research project (1998–2000), and the activity focused on the improvement of the area related PMP estimates was going on within a present national project. In the frame of the evaluation of the next extreme precipitation event in August 2002 (the Labe flood in the CR and Germany), we compared the catchments related precipitation with the PMP estimates. In this paper, an outline of the PMP estimation techniques is given and the use of data from the Czech gauges is described, the aim being the statistical derivation of the point and area PMP estimates for precipitation duration of 1 to 5 days. The use of radar data in assessing the maximized area reduction factor is discussed and the relationship resulting from the radar measurements over the CR territory is presented. An evaluation of the radar-based area rainfall enabled us to transform the point PMP to the area PMP estimate designed for the river basins in CR. In the last part of the paper, the results obtained by comparing the rainfalls in 1997 and 2002 flood events with the PMP estimates are presented. The comparison showed that the maximum area rainfalls over small Czech catchments (the 3rd order river basins) did not exceed 63% of the corresponding PMP values. 相似文献
32.
Daniela ez
ov Marek Kapar Miloslav Müller Zbynk Sokol Vilibald Kakos David Hanslian Petr Peice 《Atmospheric Research》2005,77(1-4):354
The hydro-meteorological characteristics of the flood from August 2002, which affected a great part of the Czech territory, particularly the Vltava and Labe river basin, were compared with corresponding conditions during similar flood events in the summer seasons of 1997, 1890, 1897 and 1903. The comparison shows analogies in synoptic conditions and causal precipitation heights. The heaviest precipitation fell in the area of a considerable horizontal pressure gradient on the rearward side of the cyclone which advanced very slowly to the north-east across Central Europe and created conditions for the transport of moist air as well as for an organized long-term updraft enhanced in orographically exposed regions. The varying features of the individual events were based on the spatial–temporal distribution of causal precipitation and also on the very different saturation of the catchments. It was chiefly the extraordinary time concentration of precipitation together with the highest catchment saturation that made the flood in 2002 the most extreme.The extremeness of meteorological fields during two episodes in July 1997 was compared with two episodes in August 2002 with the aid of the reanalysis data from ECMWF. The first episode in 1997 and the second episode in 2002 were the most similar and more extreme in terms of the large-scale fields of basic meteorological quantities. The similar features of these episodes are specifically an intensive influx of moisture into Central Europe and intensive upward motions in the precipitation area. The extremeness of upper- and low-level potential vorticity fields was evaluated to diagnose the behavior of the cyclone and frontal precipitation bands accompanying it. The suitable spatial configuration of positive upper- and low-level potential vorticity anomalies induced an additional amplification of upward motions in the precipitation area that apparently contributed to triggering the heavy precipitation over Central Europe. On the whole, quantities reached more extreme values during the second episode in 2002. 相似文献
33.
Hana Jir��kov�� Fr��d��ric Huneau H��l��ne Celle-Jeanton Zbynek Hrkal Philippe Le Coustumer 《Hydrogeology Journal》2011,19(8):1545-1562
Climatic instability during the late Pleistocene has been reflected in the pattern of groundwater recharge. This report summarizes palaeoclimate knowledge during the late Weichselian in Europe. During this period the majority of northern Europe was covered by thick ice sheets and permafrost, preventing aquifers from recharging. In contrast, southern Europe was generally free of these palaeoclimatic features. Palaeoclimatic information has been combined with isotope data to better understand the palaeorecharge conditions and recharge timing across the European continent. The 18O and 2H relationship shows latitudinal plus climatic influences. Radiocarbon data show that while southern European aquifers have generally been recharged continuously during the last 40,000 years, northern European aquifers typically show a recharge gap during the Last Glacial Maximum. Areas that underwent continuous recharge during the entire late Pleistocene period can also be distinguished from areas where recharge to aquifers was prevented during the Last Glacial Maximum. Finally, several examples are presented of melt-water recharge or subglacial recharge. The identification of such diversity in the groundwater palaeorecharge in Europe is of great importance for modellers developing management schemes for groundwater resources. 相似文献
34.
Novikova S. A. Murzintsev N. G. Travin A. V. Sokol E. V. Tulokhonov A. K. 《Doklady Earth Sciences》2018,483(2):1567-1570
Doklady Earth Sciences - Based on the study results of combustion metamorphic (CM) rocks from the young (0.01–0.06 kyr) CM complex at the Goose Lake brown coal deposit, a new approach to... 相似文献
35.
Sokol E. V. Deviatiiarova A. S. Kokh S. N. Reverdatto V. V. Artemyev D. A. Kolobov V. Yu. 《Doklady Earth Sciences》2019,489(1):1326-1329
Doklady Earth Sciences - Marbles of the Kochumdek complex contain pyrrhotite, rasvumite, alabandine, würtzite, galena, and acanthite. The diversity of sulfides is caused by efficient crystal... 相似文献
36.
37.
R. Sokol 《International Journal of Earth Sciences》1924,15(4):314-315
Ohne Zusammenfassung 相似文献
38.
The mathematical basis for analyzing the dimensional stability of cartographic drafting surfaces, and more specifically paper, is presented in the form of a simple mechanical model. Deduction from a universal equation incorporating such factors as elasticity, viscosity, and relaxation time yields less general but more applicable equations once assumptions are made about which factors are dominant and, on the other hand, insignificant. Translated from: Izvestiya vysshykh uchebnykh zavedeniy, Geodeziya i aerofotos” yemka, 1986, No. 4, pp. 106-111. 相似文献
39.
40.
Groundwater resources use and management in the Amu Darya River Basin (Central Asia) 总被引:2,自引:0,他引:2
Shavkat Rakhmatullaev Frédéric Huneau Jusipbek Kazbekov Philippe Le Coustumer Jamoljon Jumanov Bouchra El Oifi Mikael Motelica-Heino Zbynek Hrkal 《Environmental Earth Sciences》2010,59(6):1183-1193
This paper analyses groundwater resources use and management in the socio-economic context of the Amu Darya River Basin which
covers a part of the following landlocked Central Asian countries: Afghanistan, Tajikistan, Turkmenistan and Uzbekistan. These
agrarian nations for sustaining their vital agricultural productions started to use groundwater during the recent drought
years (1998–2001) because of its relatively good quality and quantity and as an alternative to highly mineralized surface
waters. Present extent of groundwater resources use is discussed with consideration to their reserves, quality, and institutional
management and transboundary aspects within the basin. After the collapse of the centralized water resources management system
and infrastructure of the former Soviet Union, new underdeveloped systems are being practiced over the whole Amu Darya River
Basin. The critical situation of groundwater management in Afghanistan is also discussed. This work attempts to document the
management and use of groundwater in the Amu Darya Basin and present time management realities, with fragmented and weak national
and regional regulation on groundwater. Special attention is given to groundwater resources in irrigated agriculture, which
increased use in all countries of the basin is due to quick access to underground resources and relatively good quality and
quantity. 相似文献