Inverted Echo Sounder Data Report. Ulleung Basin of Japan/East Sea. June 1999 to July 2001

: Observations were conducted from June 1999 to July 2001 to study the shallow and deep current variability in the southwest Japan/East Sea. Data were collected during the field experiment with a two-dimensional array of pressure-gauge equipped inverted echo sounders (PIES) and deep recording current meters (RCM). The collection, processing and calibration of the PIES are documented in this report. Descriptions of the processes used to identify and remove jumps (offsets) in the pressure and travel time records, that resulted when the instruments were jostled or moved by deep crab-fishing activities in the Japan/East Sea, are given. Time series plots of travel time, bottom pressure, and temperature are presented for the 24 recovered instruments. Basic statistics of the hourly data are tabulated.