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Satellite-Derived Bathymetry for Nunavut

Many northern communities rely on up-to-date bathymetric information for safe ship passage between regions. However, bathymetry data for the Canadian Arctic are frequently either outdated or unavailable. Our research seeks to address this through satellite-derived bathymetry (SDB). In August 2017 we collected seafloor reflectance data from the west and east arms of Cambridge Bay, NU, as well as echo sounding data from the east arm. Using satellite imagery from Landsat 8 OLI, Sentinel 2 MSI, and WorldView 2, we compare common SDB methods to assess their performance for the waters around several communities in Nunavut. The results will directly provide bathymetric information for these communi

Field course in Zanzibar, August 2018

It's official - we ran a Geomatics and Landscape Ecology field course in Zanzibar, 6-26 August 2018! The course focused on the application of GIS and Remote Sensing technologies to answer common questions in landscape ecology, especially regarding Zanzibar's coastal environment. The course was designed and co-taught with colleagues Martin Gullström and Lina Mtwana Nordlund as well as several researchers from the Institute of Marine Science in Zanzibar. Thanks to everybody who helped the course work out!!!

Bathymetry by consumer drone

In preparation for Shallow Survey 2018, we are testing how well a standard consumer-grade drone (Phantom 3 standard) can be used to map bathymetry in shallow and relatively clear water. In August 2017 we acquired a set of videos and coincident GPS feeds from five sites in Conception Bay, Newfoundland, and contributed them to the Common Data Set for the conference. We have then started to explore their use for mapping bathymetry in the areas where the seafloor is visible in the video. This research is led by Matus Hodul.

Lab infrastructure provided by the Canadian Foundation for Innovation

Established in 2015, the Shallow Water Earth Observation Lab is still a new establishment, but we have been lucky to be supported by the Canadian Foundation for Innovation to set up some lab space and get some basic equipment in place. We're still building up our research infrastructure, but so far, the most important pieces of field equipment are: - Small inflatable boat with an electric outboard engine, as shown on the page banner. It's slow but portable and can comfortably hold two people and field equipment. It can be used as a dive platform. - Dive gear for two people for tropical and temperate diving, and for a single person diving in Arctic waters. - Single-beam echosounder. - DGPS (T

Kiyomi Holman

MSc student. Kiyomi works on satellite-derived bathymetry in Nunavut, comparing a range of empirical and physics-based methods across a range of satellite image types to assess their potential and robustness.

Fiona Davidson

MSc, graduated January 2020. Fiona worked on species distribution modeling for habitat-forming benthic organisms (corals and sponges) in the North Pacific. Her primary interest is to assess their sensitivity to climate-driven changes in ocean chemistry and currents. The oceans are useful indicators of climate change and its impacts upon ecosystems and species. Given the significant limitations in our understanding of the world’s oceans, predictive modeling of oceanic biogeochemistry and the spatial distribution of ecosystems will make a valuable contribution to conservation management for the oceans.

Matus Hodul

PhD student. Matus works on atmospheric correction and water quality estimation for inland waters in Canada. For his MSc thesis (2018) Matus worked on the application of photogrammetry to satellite-derived bathymetry.

Fieldwork in Cambridge Bay, Nunavut

In early August 2017, Kiyomi and I went to Cambridge Bay, Nunavut, do collect some field data for her work on Satellite-Derived Bathymetry (SDB). It was the first time for us to travel to the Canadian Arctic, so pretty exciting for both of us! We stayed for free in a bright and roomy apartment associated with the brand new Canadian High Arctic Research Station (CHARS) run by Polar Knowledge Canada, which is an incredible facility for visiting researchers. Not only did Polar take care of our accommodations, they also helped us connect with others in the area, and even lent us two fatbikes to get around town. Thanks Polar! Some of the SDB methods Kiyomi is exploring for her thesis research req