Collaborative Research: Exploring the Kermadec Trench --- Residence time, spatial gradients, and insights into ventilation

Information

• NSF Award
• 2319547

Owner

• UNIVERSITY OF RHODE ISLAND

• Award Id

  2319547

• Award Effective Date

  11/1/2023 - a year ago

• Award Expiration Date

  10/31/2026 - a year from now

• Award Amount

  $ 529,364.00

• Award Instrument

  Continuing Grant

This project will conduct the first physical oceanography survey of a deep ocean trench, focusing on spatial gradients and potential mechanisms of hadal ventilation in the Kermadec Trench. The observations will be made using two unique and complimentary 11 km depth-rated free-falling systems – the Hadal Water Column Profiler and the Deep Autonomous Profiler – to examine patterns and potential mechanisms of trench ventilation. Observations will include the first direct measurements of hadal turbulent microstructure, the first depth profiles of velocity, and the first examination of physical or biological water column gradients along the length of a trench.<br/><br/>The field observations consist of multiple collocated deployments of two unique and complimentary 11 km depth-rated instruments. The Hadal Water Column Profiler measures temperature, conductivity, dissolved oxygen, horizontal current velocity, turbulent microstructure, and sideways looking 200 kHz bio-acoustic backscatter. It also has a video camera and a small trace metal-clean water sampler. The Deep Autonomous Profiler measures temperature, conductivity, and dissolved oxygen, and has a downward looking camera and twenty-four 10-liter bottle water sampler.<br/><br/>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

• Program Officer

  Sean Kennanskennan@nsf.gov7032927575

• Min Amd Letter Date

  9/11/2023 - a year ago

• Max Amd Letter Date

  9/11/2023 - a year ago

• ARRA Amount

• Name

  University of Rhode Island

• City

  KINGSTON

• State

  RI

• Country

  United States

• Address

  75 LOWER COLLEGE RD RM 103

• Postal Code

  028811974

• Phone Number

  4018742635

• First Name

  Steven

• Last Name

  D'Hondt

• Email Address

  dhondt@uri.edu

• Start Date

  9/11/2023 12:00:00 AM

• First Name

  Arthur

• Last Name

  Spivack

• Email Address

  spivack@uri.edu

• Start Date

  9/11/2023 12:00:00 AM

• First Name

  Christopher

• Last Name

  Roman

• Email Address

  croman2@uri.edu

• Start Date

  9/11/2023 12:00:00 AM

• Text

  PHYSICAL OCEANOGRAPHY

• Code

  1610

• Text

  Chemical Oceanography

• Code

  1670

• Text

  EXP PROG TO STIM COMP RES

• Code

  9150