搜索结果: 1-15 共查到“地球科学总论 variations”相关记录30条 . 查询时间(0.377 秒)
US corn and soybean maladapted to climate variations
climate variations extreme weather crop yield
2021/8/4
U.S. corn and soybean varieties have become increasingly heat and drought resistant as agricultural production adapts to a changing climate. But the focus on developing crops for extreme conditions ha...
Formulation, calibration and validation of the DAIS model (version 1), a simple Antarctic ice sheet model sensitive to variations of sea level and ocean subsurface temperature
Formulation calibration validation DAIS model simple Antarctic ice sheet model sensitive sea level ocean subsurface temperature
2014/12/19
The DCESS (Danish Center for Earth System Science) Antarctic Ice Sheet (DAIS) model is presented. Model hindcasts of Antarctic ice sheet (AIS) sea level equivalent are forced by reconstructed Antarcti...
Water isotope variations in the global ocean model MPI-OM
Water isotope variations global ocean model MPI-OM
2014/12/10
The stable water isotopes H218O and HDO are incorporated as passive tracers into the oceanic general circulation model MPI-OM, and a control simulation under present-day climate conditions is analyzed...
Variations of Natural Soil Salinity in an Arid Environment Using Underground Watertable Effects on Salinization of Soils in Irrigated Perimeters in South Tunisia
Oasis Irrigation Water Superficial Water Table Salinity Drainage Tunisia
2013/3/11
In arid and semi-arid regions, salinity is a serious and chronic problem for agriculture. The aim of this study is to evaluate the hydromorphical and salinity risks, and to evaluate the relationship a...
Application of Statistical Methods to Assess Carbon Monoxide Pollution Variations within an Urban Area
Carbon Monoxide Monitoring Network Statistical Model Urban Air Pollution
2013/3/11
In recent years there have been considerable new legislation and efforts by vehicle manufactures aimed at reducing pollutant emission to improve air quality in urban areas. Carbon monoxide is a major ...
Hydrogeochemical Variations of Groundwater of the Northern Jabal Hafit in Eastern Part of Abu Dhabi Emirate, United Arab Emirates (UAE)
United Arab Emirates Salinity Major Cations and Anions Groundwater Water Genesis
2013/3/7
This study is aimed to assess and evaluate the suitability of groundwater of the area located to the south-east of Al-Ain area in the UAE using hydrogeochemcical approach. The chemical analyses of gro...
Day-time variations of foF2 connected to strong earthquakes
Day-time variations foF2 strong earthquakes
2009/12/16
The statistical analysis of the characteristic frequency foF2 of the Earth's ionosphere averaged over mid-day hours – from 11:00 till 17:00 h LT – is carried out. Disturbances of foF2 connected to ear...
Geophysical Variations During the Total Solar Eclipse in 2006 in Turkey
total solar eclipse gravity measurements magnetic measurements power spectrum low pass filtering
2011/6/28
It has been observed that some geophysical parameters could be changed during a solar eclipse. We have therefore measured gravity and magnetic fields during solar eclipses. We also measured the gravit...
Variations of phase velocity and gradient values of ULF geomagnetic disturbances connected with the Izu strong earthquakes
phase velocity gradient values ULF geomagnetic disturbances Izu strong earthquakes
2009/12/11
Results of study of anomaly behavior of amplitudes, phase velocities and gradients of ULF electromagnetic disturbances (F = 0.002 – 0.5 Hz) before and during a seismic active period are presented. Inv...
Diurnal changes of earthquake activity and geomagnetic Sq-variations
Diurnal changes earthquake activity geomagnetic Sq-variations
2009/12/11
Statistic analyses demonstrate that the probability of earthquake occurrence in many earthquake regions strongly depends on the time of day, that is on Local Time (e.g. Conrad, 1909, 1932; Shimshoni, ...
Neutron flux variations near the Earth’s crust. A possible tectonic activity detection
Neutron flux variations the Earth’s crust A possible tectonic activity detection
2009/12/10
The present work contains some results of observations of neutron flux variations near the Earth’s surface. The Earth’s crust is determined to be a significant source of thermal and slow neutrons, ori...
Comparison of simultaneous variations of the ionospheric total electron content and geomagnetic field associated with strong earthquakes
the ionospheric total electron content geomagnetic field strong earthquakes
2009/12/9
In this paper, perturbations of the ionospheric Total Electron Content (TEC) are compared with geomagnetic oscillations. Comparison is made for a few selected periods, some during earthquakes in Calif...
Specific variations of the atmospheric electric field potential gradient as a possible precursor of Caucasus earthquakes
Specific variations atmospheric electric field potential gradient Caucasus earthquakes
2009/12/8
The subject of the research is the study of anomalous disturbances of the gradient of electric field potential of the atmosphere as possible precursors of earthquakes. In order to reveal such precurso...
Variations in sea surface roughness induced by the 2004 Sumatra-Andaman tsunami
Variations sea surface roughness Sumatra-Andaman tsunami
2009/12/8
Observations of tsunamis away from shore are critically important for improving early warning systems and understanding of tsunami generation and propagation. Tsunamis are difficult to detect and meas...
Day-time variations of foF2 connected to strong earthquakes
Day-time variations foF2 strong earthquakes
2009/12/8
The statistical analysis of the characteristic frequency foF2 of the Earth's ionosphere averaged over mid-day hours – from 11:00 till 17:00 h LT – is carried out. Disturbances of foF2 connected to ear...