Limnological Methods |
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Page 95
... stratum bounded by the surface and the plane circumscribed by first submerged contour , using the formula Volume = h 3 ( a1 + a2 + √a ̧a2 ) in which b is vertical depth of each stratum , a , is area of upper surface and a is area of ...
... stratum bounded by the surface and the plane circumscribed by first submerged contour , using the formula Volume = h 3 ( a1 + a2 + √a ̧a2 ) in which b is vertical depth of each stratum , a , is area of upper surface and a is area of ...
Page 122
... stratum , T , is temperature of the lower limit of the same stratum . Multiply the mean temperature of each stratum of the lake by the per cent of the volume of the whole lake which that stratum composes . The sum of these products ...
... stratum , T , is temperature of the lower limit of the same stratum . Multiply the mean temperature of each stratum of the lake by the per cent of the volume of the whole lake which that stratum composes . The sum of these products ...
Page 123
... stratum constitutes According to Scott ( 1916 ) the method described above gives satis- factory results for lakes ... stratum of the lake and the sum taken to represent mean temperature , and in which Tm is mean temperature T1 is ...
... stratum constitutes According to Scott ( 1916 ) the method described above gives satis- factory results for lakes ... stratum of the lake and the sum taken to represent mean temperature , and in which Tm is mean temperature T1 is ...
Contents
HYDROGRAPHIC MAPPING AND MORPHOMETRY | 1 |
Temperature | 101 |
Color | 220 |
Copyright | |
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accuracy alidade angle apparatus attached base line boat bottom materials brass bucket cable centrifuge color computed concentrate Considerations construction convenient cord counting cell cubic depth described desired determined diameter disk dredge edge equipment error field filter frame funnel glass tube graduated horizontal indicated instrument intervals lake length limnological limnologist located lower end magnetic bearing mark measure mesh metal meter method micrometer microscope necessary Negretti and Zambra ocular ocular micrometer operator oxygen paper periphyton phenolphthalein pipet Pitot tube plane table planimeter plankters plankton Procedure protractor reading record ring rope sampler sand scale distance screen secured selected sextant shore line shore-line side sieve signal sodium thiosulfate sounding line square stadia rod standard stratum stream submerged suitable surface survey tape temperature thermometer tion transit station transverse measurements turbidimeter unit upper velocity vertical volume weight wire