搜索结果: 1-12 共查到“水文学 composition”相关记录12条 . 查询时间(0.125 秒)
Annual changes in the chemical composition of stream water in small catchments with different land-use (Carpathian Foothills, Poland)
river water chemistry water pollution nutrient compounds flow tendency
font style='font-size:12px;'>
2015/2/4
The aim of the study was to identify the factors that influence annual changes in the chemical composition of stream waters. The research area was located in the marginal zone of the Carpathian Foothi...
Vertical distribution and composition of phytoplankton under the influence of an upper mixed layer
upper mixed layer aquatic communities phytoplankton species water column
font style='font-size:12px;'>
2010/4/6
The vertical distribution of phytoplankton is of fundamental importance for the dynamics and structure of aquatic communities. Here, using an advection-reaction-diffusion model, we investigate the dis...
The Ionic Composition of Lakes Fed by Ground Water and Precipitation in the Upper Romerike District
Ionic Composition Ground Water Precipitation Upper Romerike District
font style='font-size:12px;'>
2009/10/29
In the Upper Romerike District the lakes possess widely different chemical characteristics
depending on their hydrological conditions. The most dilute lakes are fed
only by precipitation, and the mo...
Elemental Composition of Norwegian Rivers
Elemental Composition Norwegian Rivers
font style='font-size:12px;'>
2009/10/28
Instrumental neutron activation analysis has been applied for the determination
of up to 40 elements in waters from eleven Norwegian rivers. In order to
represent the composition of an average river...
Changes of Ionic and Oxygen Isotopic Composition of the Snowpack at the Glacier Austre Okstindbreen,Norway,1995
Oxygen Isotopic Composition Snowpack Glacier Austre Okstindbreen
font style='font-size:12px;'>
2009/10/23
Marked vertical variations of ions and oxygen isotopes were present in the
snowpack at the glacier Austre Okstindbreen during the pre-melting phase in
1995 at sites between 825 m and 1,470 m above s...
CHEMICAL AND ISOTOPIC COMPOSITION OF WATER FROM SPRINGS AND WELLS IN THE DAMOUR RIVER BASIN AND THE COASTAL PLAIN IN LEBANON
spring waters groundwater resources coastal Mediterranean plain
font style='font-size:12px;'>
2009/10/12
A hydrochemical and isotopic study was carried out on spring waters of the Damour River Basin and groundwaters from wells in the coastal Mediterranean plain in Lebanon. The aim of this study was to de...
CHEMICAL AND ISOTOPIC COMPOSITION OF RAINWATER IN COASTAL AND HIGHLAND REGIONS IN LEBANON
Rainwater samples secondary evaporation effect Regional Meteoric Water Line
font style='font-size:12px;'>
2009/10/12
Rainwater samples were collected from six stations at coastal and highland regions in Lebanon and analyzed for the major species Ca2+, K+, Na+, Mg2+, NO3-, NH4+, pH, Cl-, and SO42-. Absolute concentra...
Major, minor and trace element composition of cloudwater and rainwater at Plynlimon
cloudwater rainwater Plynlimon
font style='font-size:12px;'>
2009/6/8
The composition of cloudwater samples collected at Plynlimon, Mid Wales by the Institute of Hydrology is described based on one of the most comprehensive chemical records for deposition in the UK. Com...
Vegetation composition and soil microbial community structural changes along a wetland hydrological gradient
phospholipid fatty acid soil microbial Vegetation composition
font style='font-size:12px;'>
2009/4/28
Fluctuations in wetland hydrology create an interplay between aerobic and anaerobic conditions, controlling vegetation composition and microbial community structure and activity in wetland soils. In t...
Spatial distributions of biomass and species composition in submerged macrophytes in the southern basin of Lake Biwa in summer of 2002
Lake Biwa southern basin submerged macrophyte biomass species composition
font style='font-size:12px;'>
2009/4/2
Spatial distributions of the biomass and species composition in submerged macrophytes in the southern basin of Lake Biwa were surveyed in September, 2002. Macrophyte samples were collected from 52 si...
The O and H stable isotope composition of freshwaters in the British Isles. 2. Surface waters and groundwater
Stable isotopes surfacewaters groundwater British Isles
font style='font-size:12px;'>
2009/3/12
The utility of stable isotopes as tracers of the water molecule has a long pedigree. The study reported here is part of an attempt to establish a comprehensive isotopic "baseline" for the British Isle...
The O and H stable isotope composition of freshwaters in the British Isles. 1. Rainfall
stable isotopes rainfall British Isles
font style='font-size:12px;'>
2009/3/12
An understanding of the hydrological cycle in stable isotopic terms requires the characterisation of rainfall.