PUBLICATIONS--Transmittal of two papers on bubble gage errors In Reply Refer To: October 4, 1991 Mail Stop 415 OFFICE OF SURFACE WATER TECHNICAL MEMORANDUM NO. 92.01 Subject: PUBLICATIONS--Transmittal of two papers on bubble gage errors The purpose of this memorandum is to transmit the following two papers on bubble gage errors: "Bubble gage registration errors caused by gas column density," by Winchell Smith, to appear in the U.S. Geological Survey Water-Supply Paper 2340, Selected Papers in the Hydrologic Sciences, edited by Seymour Subitsky, in press, 1991. and "Temperature sensitivity of mercury-manometer bubble gages," by W. H. Kirby, U.S. Geological Survey Water-Resources Investigations Report 91-4038, 19 p. Please note that the temperature-sensitivity report requires changes on page 2 as noted in the attached correction sheet. These papers present detailed derivations and computations that supplement information about gas-weight and temperature errors that was presented in Office of Surface Water Technical Memorandum 91.09 (July 30, 1991). Please bring these papers to the attention of personnel in your office who have a need to understand technical details of bubble gage accuracy. Charles W. Boning Chief, Office of Surface Water Attachments (3) DISTRIBUTION: Regional Surface-Water Specialists, FO