A preliminary study of the drift of larval herring (Clupea harengus L.) using gene-frequency data     

Heath  M. R.; Walker  J. 《ICES Journal of Marine Science》1987,43(2):139-145

  相似文献   

Classification of Ground-Water Systems of the United States     

Ralph C. Heath 《Ground water》1982,20(4):393-401

  相似文献   

WHAT ABOUT GROUND WATER?     

Ralph C. Heath 《Ground water》1973,11(6):50-51

EDITOR'S NOTE: The following article by Ralph C. Heath which appeared in the January 1973 issue of the North Carolina Engineer is another excellent example of how ground-water geologists and hydrologists should and must speak out in their communities in support of ground-water development.  相似文献   

Resonant period and Q of the Celtic Sea and Bristol Channel     

R.A. Heath 《Estuarine, Coastal and Shelf Science》1981,12(3):291-301

  相似文献   

Transmission of tidal energy over a plateau   总被引：1，自引：0，他引：1  

Ronald Allan Heath 《Ocean Dynamics》1979,32(6):289-296

  相似文献   

Design of Ground–Water Level Observation–Well Programs     

Ralph C. Heath 《Ground water》1976,14(2):71-77

  相似文献   

Phosphorus accumulation rates in metalliferous sediments on the East Pacific Rise     

P.N. Froelich  M.L. Bender  G.R. Heath 《Earth and Planetary Science Letters》1977,34(3):351-359

Based on phosphorus, iron and manganese analyses in 16 cores (5 dated) from the crest and flanks of the East Pacific Rise and the Bauer Deep we estimate that phosphorus is being deposited about 20 times faster in metalliferous sediments near the rise crest than in adjacent flank deposits, and about 40 times faster on the crest than in the Bauer Deep. Almost all of the phosphorus on the rise crest is contained in poorly crystallized hydrothermal iron oxyhydroxides, supporting Berner's (1973) proposal of phosphate sorption by these phases. The phosphate is probably derived from seawater, but some hydrothermal contribution cannot be excluded at this time. Flux estimates indicate that metalliferous sedimentation could remove 15–40% of the pre-agricultural river input of dissolved phosphate.  相似文献   

The lunar semi-diurnal tide in Cook Strait,New Zealand     

R. A. Heath 《Ocean Dynamics》1974,27(5-6):214-224

  相似文献   

Meteorological effects on the surface circulation and hydrology of Tasman bay,New Zealand     

R. A. Heath 《新西兰海洋与淡水研究杂志》2013,47(1-2):111-123

Analyses of trajectories of drift cards, released over a 2‐year period April 1969‐Aprit 1971, and hydrological observations at nine stations all occupied in and near Tasman Bay within 19 hours on 4–5 March 1970, show variable surface flows, which are strongly influenced by wind. Water characteristics are altered by insolation and coastal run‐off. The exchange times for the water in Tasman Bay were calculated for differing wind speeds.  相似文献   

Climate,Not Atmospheric Deposition,Drives the Biogeochemical Mass-Balance of a Mountain Watershed     

Jared Heath  Jill S. Baron 《Aquatic Geochemistry》2014,20(2-3):167-181

Watershed mass-balance methods are valuable tools for demonstrating impacts to water quality from atmospheric deposition and chemical weathering. Owen Bricker, a pioneer of the mass-balance method, began applying mass-balance modeling to small watersheds in the late 1960s and dedicated his career to expanding the literature and knowledge of complex watershed processes. We evaluated long-term trends in surface-water chemistry in the Loch Vale watershed, a 660-ha. alpine/subalpine catchment located in Rocky Mountain National Park, CO, USA. Many changes in surface-water chemistry correlated with multiple drivers, including summer or monthly temperature, snow water equivalent, and the runoff-to-precipitation ratio. Atmospheric deposition was not a significant causal agent for surface-water chemistry trends. We observed statistically significant increases in both concentrations and fluxes of weathering products including cations, SiO₂, SO₄ ^2?, and ANC, and in inorganic N, with inorganic N being primarily of atmospheric origin. These changes are evident in the individual months June, July, and August, and also in the combined June, July, and August summer season. Increasingly warm summer temperatures are melting what was once permanent ice and this may release elements entrained in the ice, stimulate chemical weathering with enhanced moisture availability, and stimulate microbial nitrification. Weathering rates may also be enhanced by sustained water availability in high snowpack years. Rapid change in the flux of weathering products and inorganic N is the direct and indirect result of a changing climate from warming temperatures and thawing cryosphere.  相似文献