To subscribe to the ORE seminar mailing list, click here.
For a (working draft) list of upcoming seminars, click here.
If you are interested in giving an ORE seminar, please contact us at nosal [at] hawaii [dot] edu.
- There are no upcoming events.
- There are no upcoming events.
ocean acoustics
Latest Past Events
Seminar: Comparing Observations of Seafloor Distributed Fiber-optic Sensing to Observe Ocean Waves
ORE ZoomDr. Hannah Glover Research Associate Oregon State University *Zoom only* Meeting ID: 963 5962 3640 Passcode: OREseminar https://hawaii.zoom.us/j/96359623640 Distributed Acoustic Sensing is emerging as a powerful technique for observing geophysical and oceanographic processes. DAS methods can provide significant improvements in the spatial and temporal density of in-situ data collection. A single instrument attached to a fiber-optic cable, such as a seafloor telecom cable, can continuously record nanoscale cable strain and temperature with meter-scale measurement spacing over 10s of kilometers at kHz frequencies. In this seminar, I will explore recent applications of Distributed Acoustic Sensing (DAS) for quantitatively measuring ocean surface
Seminar: Acoustic inference of sea ice mechanical properties
ORE ZoomD. Benjamin Reeder, Ph.D. Research Professor Department of Oceanography Naval Postgraduate School, Monterey, CA, USA *Zoom only* Meeting ID: 963 5962 3640 Passcode: OREseminar https://hawaii.zoom.us/j/96359623640 Arctic climate is important globally and regionally, in terms of its effects on global temperatures, global sea level, commercial activities and native coastal communities. The Arctic energy budget is driven by atmospheric temperatures, cloud cover, wind patterns, freshwater discharge, oceanic forcing and sea ice cover. Sea ice cover is particularly important because it buffers air-sea heat flux and strongly influences Earth’s absorption of solar radiation through ice-albedo feedback mechanism. Understanding the relative contributions of all
Seminar: Observing the ocean acoustically with the Kauai Beacon source
ORE ZoomKay (Kai) Gemba, Ph.D. Associate Professor, Department of Physics Naval Postgraduate School, Monterey, CA, USA *Zoom only* Meeting ID: 963 5962 3640 Passcode: OREseminar https://hawaii.zoom.us/j/96359623640 The 75 Hz center-frequency Kauai-Beacon Source is well-situated for observing the North Pacific Ocean acoustically, and ongoing efforts enable transmissions and analysis of broadband signals for this 18-month duration time-series. Previously, we demonstrated acoustic receiving along paths to Wake Island (∼3500 km), Monterey Bay, and OOI near Oregon (∼4000 km). Travel time observations to Wake Island compare well with HYCOM reanalysis data in 2023, but the model does not capture a continuous warming trend observed