Definition of "downwell"
downwell
verb
third-person singular simple present downwells, present participle downwelling, simple past and past participle downwelled
To sink below material of lower density.
Quotations
Some of the northward-flowing waters turn eastward and enter the Throughflow sponge above 1300 m (Figure 5b), where they downwell and return to the interior and spread both to the south and the north (Figure 5c).
1996, Tong Lee, Jochem Marotzke, Inferring Meridional Mass and Heat Transports of the Indian Ocean by Fitting a General Circulation Model to Climatological Data, page 12
Ozone in the upper troposphere which downwells to the surface can also result from photochemical production enhanced by high levels of NOx from the natural stratosphere, aircraft emissions of NOx in the upper troposphere ,
1999, Katherine Anne Duderstadt, Summertime tropospheric ozone photochemistry over the western Atlantic Ocean, page 10
(of radiation) To penetrate water downward.
Quotations
There is a practical depth limit from which the radiance is reflected. Gordon & McCluny (1975) call the depth at which the spectral radiance downwelled from the surface falls to 1/e of its initial energy 'the first optical attenuation length'.
1988, J. A. Pyle, K. A. Browning, L. Thomas, Towards improved methods of exploiting remotely sensed imagery, page 329
noun
plural downwells
A vertical shaft or well in which water flows downward.
Quotations
A six-foot diameter steel transportation pipe connects the downwell at the end of the collection channel to the upwell box at the existing juvenile fish facility. The downwell ensures that the pipe is pressurised and eliminates air entrainment.
1994, Lower Snake River Biological Drawdown Test, page 20
The Furnish Canal juvenile fish bypass facility caused few injuries to fall chinook salmon test fish that traveled through the headworks canal, past the screens, and through the downwell, bypass pipe, and outlet when canal flow was 67% of maximum and bypass flow was at maximum.
1995, Evaluation of Juvenile Fish Bypass and Adult Fish Passage Facilities at Water Diversions on the Umatilla River, page 44
adjective
comparative more downwell, superlative most downwell
Quotations
By measuring downwell and wellhead temperature, wellbore heat losses through the casing to the formation can be measured.
1982, American Institute of Aeronautics and Astronautics, A Collection of Technical Papers: AIAA/EPRI International Conference on Underground Pumped Hydro and Compressed Air Energy Storage
adverb
comparative more downwell, superlative most downwell