Abstract:

Spectral surface wave models predict the wave action evolution of multiple wave components. It is well understood that the group speed of the wave action of a particular wave component is modified if an Eulerian near-surface current exists. However, a typical ocean wave field also introduces a significant integrated Stokes drift or Lagrangian mass transport and its impact on the group speed of a particular wave component is not well known. In this study the wave evolution equations are derived in the presence of two wave trains and the impacts of one wave train on the phase and group speeds of the other wave train are investigated. The results are extended to estimate the impact of the entire wave spectrum on the propagation of a particular wave train. It is found that the group speed of the dominant waves can be significantly enhanced by the presence of other waves by up to 0.3–0.4 m/s or 4%–5% in strongly wind-forced conditions under tropical cyclones. This increase of the group speed is almost twice as large as the advection by a sheared current with the same profile as the Stokes drift integrated over the wave spectrum. Introducing this enhanced group speed in the wave models may make a noticeable impact on their surface wave predictions. It is also found that the increase of the phase speed of a particular wave component is much larger than the advection by a sheared current with the same profile as the integrated Stokes drift.

Join via Zoom!

https://umassd.zoom.us/j/97440069270

Meeting ID: 974 4006 9270

Passcode: 428029

SMAST has partnered with the Mass Environmental Police to offer a 2-day Boating safety class on Monday, June 9^th  and Wednesday, June 11^th.  The class will be offered in SMAST East 101-102. The Class size is limited, so if you are interested, please email Mike Marino (mmarino@umassd.edu) to reserve your spot. If this date/time does not work for you but you are interested in a future training, please let him know.

This year’s IMS Symposium will be held March 26 from 9-5 at SMAST East! Register HERE!

The NEW registration deadline date Thursday March 20th at 4:00 PM. We cannot accept any after that time! Please get it done ASAP so you can be sure we have you on there :). If you are planning on presenting, also submit your abstract by March 3rd, you can find the details on the website!

Kate Masury will be joing us at SMAST East 101-103 on February 26, from 3-4! Kate Masury, executive director at Eating with the Ecosystem, will be discussing “Understanding Seafood Supply Chains: Strengthening Connections Between Fisheries, Markets, and Ecosystems”. Please join us at SMAST or on Zoom!

Abstract:

New England’s seafood supply chains are dynamic and complex, shaped by ecological shifts, regulatory frameworks, and evolving consumer demand. While the region lands an incredible diversity of seafood, much of it is exported, and local markets remain dominated by imports. How can we build more resilient, place-based seafood supply chains that better support both fisheries and communities? This talk will explore these challenges through the work of Eating with the Ecosystem and its efforts to promote a more adaptive, ecosystem-based approach to local seafood. A key focus will be the Markets to Models project, a collaboration with UMass Dartmouth’s School for Marine Science and Technology (SMAST), which is piloting an innovative marketplace model to better illustrate the connections between seafood supply chains, fisheries, and ecosystems. By mapping these connections, the project aims to identify strengths and vulnerabilities within supply chains, providing valuable insights for improving market resilience and sustainability. We’ll examine how strengthening local seafood networks can enhance economic opportunities, promote ecosystem-based management, and increase access to fresh, locally harvested seafood. By rethinking how seafood moves from boat to plate, we can create a more transparent, sustainable, and adaptive future for New England’s fisheries.