Spray 2 underwater gliders for high-resolution multi-variable surveys of the upper ocean
Abstract
Observational oceanography is made challenging by the wide range of spatial and temporal scales that must be sampled. Autonomous pla tforms offer an approach to this observational challenge by being relatively small and portable, so that their numbers and deploymen t patterns can be scaled to the problem at hand. This proposal aims to address this challenge by establishing a fleet of three Spray 2 underwater gliders equipped with sensors to measure pressure, temperature, salinity, velocity, chlorophyll fluorescence and disso lved oxygen. Underwater gliders are proven platforms with scientific applications including: (1) three-dimensional circulation at fr onts, (2) regional oceanography and boundary currents, (3) processes near abrupt topography, and (4) internal waves at tidal and hig h frequencies. Fundamental contributions by Spray underwater gliders in all of these areas have been demonstrated in ONR-sponsored e xperiments over the past 15 years. The three Spray 2 underwater gliders will be used in the Coherent Lagrangian Pathways from the Su rface Ocean to Interior (Calypso) program. The scientific objective is to quantify three dimensional flow in two ways: (1) indirectl y using 4-dimensional surveys of an ocean front to infer vertical velocity using the omega equation, and (2) using gliders to track isopycnals to directly measure the flow in the subduction region. Future research uses of the Spray 2 underwater gliders may includ e the Improved Science of Observation, Analysis, and Prediction (iSOAP) project focused on predictability in ocean regions. In this application, underwater gliders are adaptable platforms whose data are valuable for assimilation into and validation of ocean model s. Spray underwater gliders are key parts of research, education, and outreach at graduate, undergraduate and high school levels. Th e Spray 2 underwater glider is being developed through funding by the National Ocean Partnership Program. Objectives of the the Spra y 2 design include improvements in ease of use, range, speed, and ability to carry and swap sensors. This proposal will fund the imp ortant first year s build of the newly developed Spray 2 underwater gliders.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 07, 2021
- Source ID
- N000142112863
Entities
People
- Daniel L. Rudnick
Organizations
- Office of Naval Research
- United States Navy
- University of California, San Diego