Limnological Methods |
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Page 80
... compute average ) . Using distance from pivot to tracing - point hole as radius of circle described by tracing point , compute area of circle ; check computed value with area read on planimeter . 3. With pair of dividers draw on ...
... compute average ) . Using distance from pivot to tracing - point hole as radius of circle described by tracing point , compute area of circle ; check computed value with area read on planimeter . 3. With pair of dividers draw on ...
Page 84
... computed mathematically ) in graded sizes from small to large , or use cross - section paper . Following procedures outlined in paragraphs 3-8 , carefully make measurements of a graded series of areas ; compare computed values with ...
... computed mathematically ) in graded sizes from small to large , or use cross - section paper . Following procedures outlined in paragraphs 3-8 , carefully make measurements of a graded series of areas ; compare computed values with ...
Page 122
... computed as follows : ( a ) the number of calories required to warm a water column of unit base in the deepest part of a lake from a selected minimum ( 0 ° C. , 4 ° , winter minimum ) to the maxi- mum summer temperature ; ( b ) the ...
... computed as follows : ( a ) the number of calories required to warm a water column of unit base in the deepest part of a lake from a selected minimum ( 0 ° C. , 4 ° , winter minimum ) to the maxi- mum summer temperature ; ( b ) the ...
Contents
HYDROGRAPHIC MAPPING AND MORPHOMETRY | 1 |
Color | 220 |
Lines | 337 |
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