Search Results

You are looking at 1 - 2 of 2 items for :

  • Author or Editor: Henry Perkins x
  • Journal of Atmospheric and Oceanic Technology x
  • Refine by Access: All Content x
Clear All Modify Search
Joel Wesson
,
Kim David Saunders
,
Bruce Bricker
, and
Henry Perkins

Abstract

A fluorometer intended for ocean measurements of dye patches achieves small size, low power consumption, and high sensitivity. Its performance is reported using fluorescein sodium as the fluorescent agent, although the principle is applicable to any dye that fluoresces at a wavelength sufficiently different from the excitation wavelength. An implementation in the Naval Research Laboratory’s advanced microstructure profiler is described in detail, and results from static calibration and dynamic response tests are given.

Full access
Kuh Kim
,
Sang Jin Lyu
,
Young-Gyu Kim
,
Byung Ho Choi
,
Keisuke Taira
,
Henry T. Perkins
,
William J. Teague
, and
Jeffrey W. Book

Abstract

Voltage induced by the Tsushima Current on an abandoned submarine telephone cable between Pusan, Korea, and Hamada, Japan, has been measured since March 1998 in order to monitor the volume transport through the Korea Strait. Voltage has a good linear relationship with the transport measured by bottom-mounted acoustic Doppler current profilers (ADCPs) along a section spanning the Korea Strait. The linear conversion factor is estimated to be Λ0 = (8.06 ± 0.63) × 106 m3 s−1 V−1 with the reference voltage of V 0 = 0.48 ± 0.07 V. The voltage-derived transport reveals various temporal variations that have not been known previously. Measurement of the cable voltage provides a reliable means for continuous monitoring of the volume transport of the Tsushima Current, which determines the major surface circulation and hydrography in the East Sea.

Full access