SandyDuck '97 Breaking Waves and Bubble Measurements M. Y. Su, NRL-SSC Instrument Sampling Information 1. Acoustic resonator and void fraction systems: a) Offshore systems: AR #1 36deg 11.05'N 75deg 43.10'W (4 Acoustic Resonators, 4 Void Fraction Sensors, 1 Accelerometer, LISST Sep 13-21, 2 Mini-Log Thermistors) AR #2 36deg 10.89'N 75deg 43.50'W (4 Acoustic Resonators, 4 Void Fraction Sensors, 1 Accelerometer, 2 Mini-Log Thermistors ) AR #3 36deg 10.83'N 75deg 43.70'W (4 Acoustic Resonators, 4 Void Fraction Sensors, 1 Accelerometer, 2 Mini-Log Thermistors) AR #4 36deg 10.80'N 75deg 43.80'W (4 Acoustic Resonators, 4 Void Fraction Sensors, 1 Accelerometer, 4 Channel Thermistor Chain, 2 Mini-Log Thermistors) b) Surf Zone (FRF local coordinates) AR #5 293m(East) 605m(North) (2 Acoustic Resonators, 2 Void Fraction Sensors, 1 Accelerometer, 2 Mini-Log Thermistors) VF#1 612mN 300mE (6 Void Fraction Sensors, 2 Mini-Log Thermistors, Tilt and Heading sensors) VF#2 612mN 240mE (6 Void Fraction Sensors, 2 Mini-Log Thermistors, Tilt and Heading sensors) VF#3 612mN 195mE (6 Void Fraction Sensors, 2 Mini-Log Thermistors, Tilt and Heading sensors) Notes: Acoustic resonators record 1 ensemble averaged spectrum every 2 minutes Void fraction sensors, thermistor chain and accelerometers record at 20Hz Minilogs record temperature once every 2 minutes LISST (Laser In Situ Scattering Transmissometer) system records once every 2 minutes from Sep 13-21 2. Hydrophone Installation and recording times Mounted on VF#2 Staff: 612mN, 240mE in FRF Coordinates Hydrophone is sampled at 15KHz or 40KHz Oct 6 1350-1644 Oct 7 0954-1012,1537-1603 Oct 8 0923-0928,1755-1806 Oct 9 1436-1453,1805-1947 Oct 11 0833-1208,1434-1459 Oct 12 0915-1212 Oct 15 1440-1611 Oct 16 1406-1736 Oct 17 1105-1617 Oct 18 1047-1118,1630-1702 Oct 19 0914-1004,1418-1446 Oct 20 0950-1040,1521-1652 Oct 21 0820-0830,1220-1230,1539-1726 Oct 22 1646-1801 Oct 23 0810-1124 3. Instrument Operation Schedule Instrument Days (September, 1997) - Complete(X), Partial(p), None(-) __________________________________________________________________________ 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 __________________________________________________________________________ AR#1 - - p - - - - p - p X p p X p p X p p p AR#2 - - p - - - - p - p X p p X p p X p p p AR#3 - - p - - - - p - p X p p X p p X p p p AR#4 - - p - - - - p - p X p p X p p X p p p AR#5 p p - - - - - p - p p p p p - - - - - - VF#1 p p - - - - - - - - - - - - - - - - p p VF#2 p p - - - - - - - - - - - - - - - - - - VF#3 - - - - p - - - - - - - - - - - p X X p Instrument Days (October, 1997) - Complete(X), Partial(p), None(-) __________________________________________________________________________ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 __________________________________________________________________________ AR#1 p p p p p - p p p p p - - - - AR#2 p p p p p - p p p p p p p p p AR#3 p p p p p - p p p p p p p p p AR#4 p p p p p - p p p p p p p p p AR#5 - - - - - - - - - - - - - - - VF#1 p X p - - p p p - p X X X X X VF#2 p X p - - p p p - p X X X X X VF#3 p X p - - p X p p X X X X X X Instrument Days (October, 1997) - Complete(X), Partial(p), None(-) __________________________________________________________________________ 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 __________________________________________________________________________ AR#1 - - - - - - - - - - - - - - - - AR#2 p X p p - - - - - - - - - - - - AR#3 - - - - - - - - - - - - - - - - AR#4 p X p p p p p p - - - - - - - - AR#5 - - - - - - - - - - - - - - - - VF#1 X X X X X X X X X X X X p - - - VF#2 X p - - - - - - - - - - - - - - VF#3 X X X X X X X X X X X X X p p X