Lightnews — Scholar-powered news

Scott Milne (Milne Technologies) @milnetechnologies.ca · Sep 13

So cool. Like flying over Everest! Btw the 333 is very pretty.

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Scott Milne (Milne Technologies) @milnetechnologies.ca · Sep 13

All that bottom tracking must be helpful for keeping you awake! Good luck with the rest of the surveys.

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Scott Milne (Milne Technologies) @milnetechnologies.ca · Sep 10

Wishing you calm seas @alltooclearfilm.bsky.social! In partnership with @harknesslab.bsky.social and @lakeheaduniversity.bsky.social, we will be sinking an autonomous up-looking echosounder that will ping 24/7 to help understand the diel behaviour of fish and zoop at Sup Shoal. Be sure to tune in!

All Too Clear Film @alltooclearfilm.bsky.social · Sep 10

Pre-dawn departure from Duluth - steaming for 24 hours to get to the Superior Shoal. @CTVLondon picked up the story, check it out:
www.ctvnews.ca/london/artic...

See the Superior Shoal for yourself on the LIVEstream this Sunday 3-5pm ET. www.youtube.com/live/oKB_iw8...

Bruce County filmmakers searching Great Lake for ‘Freshwater Everest’

The research vessel, Blue Heron, left Duluth this morning, steaming towards a once in a lifetime underwater research opportunity in Lake Superior.

www.ctvnews.ca

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Reposted by Scott Milne (Milne Technologies)

ICES - International Council for the Exploration of the Sea @icesmarine.bsky.social · Mar 17

📡 Smart fisheries management!
A solar-powered, acoustic monitoring system is providing near-real-time fish abundance data to optimize fishing for sustainability. 🐟

IJMS Hidden Gems
🎬 Watch now youtu.be/7EJhpwAqLJo
Full study ➡️https://doi.org/10.1093/icesjms/fsad196

📷Mark Stone @uwsafs.bsky.social

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Reposted by Scott Milne (Milne Technologies)

The OHA-GEODAMS Seafloor Observatory @geodams.bsky.social · Jan 19

Measuring travel time and knowing the speed of sound in water, the echosounder provides depth measurements along swaths, which we combine to create bathymetric maps, revealing underwater landscapes, submarine volcanoes, and ridges.

The difference between satellite-based bathymetry (left, Smith & Sandwell, 1997) and ship-acquired multibeam bathymetry of the Southeast Indian Ridge (Loubrieu et al.)

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Reposted by Scott Milne (Milne Technologies)

Gregory Power @gregorywpower.bsky.social · Jan 18

A pretty solid read if you want to learn about CRS’s and the difference between a foot and a survey foot.

Just Jami @justjami.bsky.social · Jan 16

Get ready, datums are changing!

Great storymap showing how the effect of the changes!
storymaps.arcgis.com/stories/a8e9...

#GISChat

Surveyors Prepare: Datums are Changing!

Better Data Quality Coming to a Location Near You

storymaps.arcgis.com

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Reposted by Scott Milne (Milne Technologies)

freshwater fELA 🇨🇦 @not-klaatu.bsky.social · Jan 10

The future is #catostomidae... firmly believe that if there's a sentinel species that can tell us about enironmental changes, this group of fishes is it. Widely distributed, rarely targeted by anglers (and therefore don't need to worry about fishing mortality), and, I mean, just look at that face

Matthew L. Miller @matthewlmiller.bsky.social · Jan 10

There's a sucker (myth) born every minute. These are not trash fish.

Suckers are native fishes found across N. America. They are essential parts of the ecosystem. They're cool fishes to pursue.

Photo by Joel Sartore, of a largescale sucker I caught for him to photograph (and release).

Largescale sucker photograh by Joel Sartore/Photo Ark. I caught this sucker for Joel while he was visiting Boise to photograph some zoo animals. He had a free day and noted he wanted to photograph more native fishes. We went out to a local stream and I caught this native sucker. It was photographed in a tank and safely released.

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Reposted by Scott Milne (Milne Technologies)

Trent Centre for Communicating Conservation @trentconservation.bsky.social · Jan 9

We're back in February for more conservation science! Join Dr. Mark Ridgway for the scoop on Algonquin Park lake fish. There's more going on beneath the waters than we thought!

A poster for our pub talk Islands of Water in a Sea of Land: Newly Discovered Species Diversity of Fish in Algonquin Park. Feb 11, 7:30 pm, the Publican. Dr. Mark Ridgway is pictured holding up a 2 foot fish with blue lakewater stretching out in the background

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Erin Stewart @erinmcstewart.bsky.social · Jan 8

📣 Just published in @conphysjournal.bsky.social with @jacobbowman.bsky.social, Chris Wilson, and Graham Raby

How much does upper thermal tolerance vary among wild populations of brook trout? What drives this variation? 🌡️

🧵1/5

doi.org/10.1093/conp...

Local conditions drive interpopulation variation in field-based critical thermal maximum of brook trout

Abstract. Individual- and population-level responses to thermal change will be pivotal for species’ resilience and adaptive responses to climate change. Th

doi.org

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Reposted by Scott Milne (Milne Technologies)

The OHA-GEODAMS Seafloor Observatory @geodams.bsky.social · Jan 1

This is why we turned on our multibeam sonar, which measures bathymetry at high resolution (~50 m/pixel) along the track of the ship, revealing spectacular highs and lows as we crossed the Southwest Indian Ridge a couple days ago.

imaging the axis of the Southwest Indian Ridge with the multibeam sonar

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Reposted by Scott Milne (Milne Technologies)

Anthony Ricciardi @ecoinvasions.bsky.social · Dec 26

Quote: "This situation shows why it's a bit of a risky proposition … to be relying on the industry to collect data that you're using to assess the fishery and then make decisions about how much quota the industry can take."

François-Nicolas Robinne @fnrobinne.bsky.social · Dec 26

Industry withholding #data on one of #Canada 's largest #fisheries, advocates say

www.cbc.ca/news/canada/...

Industry withholding data on one of Canada's largest fisheries, advocates say | CBC News

Advocates and scientists are raising concerns with the availability of data on one of Canada's largest fisheries, as the Department of Fisheries and Oceans DFO is waiting on industry to provide data o...

www.cbc.ca

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Reposted by Scott Milne (Milne Technologies)

Scott Milne (Milne Technologies) @milnetechnologies.ca · Dec 19

☃️🎼Do you hear what I hear?......at 500 kHz? 🎧 Here is to a safe and "sounding" holiday for you and yours!🎄❄️

Credit: slightly modified bathy model from our 2017 multibeam #sonar survey of @iisd.bsky.social ELA LK260. #ThrowbackThursday

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Reposted by Scott Milne (Milne Technologies)

José Luis Casamor @batidivulga.bsky.social · Dec 23

I’m pleased to share the new version 5 of “The International Bathymetric Chart of the Arctic Ocean (IBCAO)”, which offers a resolution (100 × 100 m) four times as high as v4:

rdcu.be/d4yx7

#OceanMapping #seafloor #geomorphology ⚒️🌊

The International Bathymetric Chart of the Arctic Ocean Version 5.0

Scientific Data - The International Bathymetric Chart of the Arctic Ocean Version 5.0

rdcu.be

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Scott Milne (Milne Technologies) @milnetechnologies.ca · Dec 21

Although it was a lot of work to push them into place, I think the trout are quite happy with their new benthic alpha-habitat structures. Unless you think we need funding to replace it with a much trendier font? Maybe a nice Romie or Garamond serif?

Picture of a boat on a lake moving large floating letters that spell "Happy".

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Reposted by Scott Milne (Milne Technologies)

ProfColinBean @profcolinbean.bsky.social · Dec 20

Fish Distribution in Lacustrine and Riverine Biotopes of Bratsk Reservoir Based on the Results of Hydroacoustic Surveys. J. Ichthyol. 64, 1001–1015 (2024). doi.org/10.1134/S003...

Fish Distribution in Lacustrine and Riverine Biotopes of Bratsk Reservoir Based on the Results of Hydroacoustic Surveys - Journal of Ichthyology

Abstract Fish distribution in different areas of Bratsk Reservoir has been studied using hydroacoustic equipment. The average abundance of fish decreases (r = –0.70; p < 0.05; R2 = 0.49) from the near...

doi.org

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Scott Milne (Milne Technologies) @milnetechnologies.ca · Dec 19

☃️🎼Do you hear what I hear?......at 500 kHz? 🎧 Here is to a safe and "sounding" holiday for you and yours!🎄❄️

Credit: slightly modified bathy model from our 2017 multibeam #sonar survey of @iisd.bsky.social ELA LK260. #ThrowbackThursday

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Scott Milne (Milne Technologies) @milnetechnologies.ca · Dec 19

Would be fun to try. Altho we developed tags that can be activated, detected and decoded by sonar, the ⬇️ body size, ⬆️ predation pressure, and ⬆️ mortality of Alewife would make reliable detection challenging. But @glatos-fish.bsky.social have trkd Cisco, Mooneye, and Bloater. doi.org/10.1139/cjfa...

Integrating hydroacoustic and telemetric surveys to estimate fish abundance: a new approach to an old problem

Population abundance is a critical metric in fisheries and conservation, but it is very difficult to measure accurately. Existing estimation methods present significant challenges: mark–recapture meth...

doi.org

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Scott Milne (Milne Technologies) @milnetechnologies.ca · Dec 18

Alewife in the #GreatLakes are sensitive to seiche-driven upwelling events, forcing large schools to go tight to shore. Implications for potential fish entrainment at cooling-water intake facilities. Results from a fish diversion system monitoring study using #acoustics. 🐟
doi.org/10.1080/0275...

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Scott Milne (Milne Technologies) @milnetechnologies.ca · Dec 17

An example of upstream migrating Whitefish in a #GreatLakes tributary recorded using a #DIDSON multibeam imaging #sonar. The video provides a demo of our semi-automated processing method using Echoview software. We also support ARIS and FlexView sonar data. Methods paper; doi.org/10.1016/j.fi...

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Reposted by Scott Milne (Milne Technologies)

Canadian Paintings @canadianpaintings.bsky.social · Dec 16

A Walk in the Snow
Jennifer Walton
2016

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Scott Milne (Milne Technologies) @milnetechnologies.ca · Dec 13

Imaging #sonar systems such as #ARIS are ideal for observing fish behaviour and for assessing spawning sites. Shown are spawning fish within a #GreatLakes coastal wetland. We use Echoview software to automate background removal, target detection, and counting. Methods paper; doi.org/10.1002/nafm...

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Reposted by Scott Milne (Milne Technologies)

Cameron Bodine @cameronbodine.bsky.social · Dec 12

🔥 🔥 🔥 New Version🔥 🔥 🔥
#PINGMapper is now compatible with Lowrance fishfinders!

github.com/CameronBodin...

#CSHEL #sidescan #fishfinders4good #benthicmapping

GitHub - CameronBodine/PINGMapper: Open-source interface for processing recreation-grade side scan sonar datasets and reproducibly mapping benthic habitat

Open-source interface for processing recreation-grade side scan sonar datasets and reproducibly mapping benthic habitat - CameronBodine/PINGMapper

github.com

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Reposted by Scott Milne (Milne Technologies)

Cameron Bodine @cameronbodine.bsky.social · Dec 12

In addition, new methods of reading data from sonar logs (recordings) result in up to a 1.3𝐱 𝐬𝐩𝐞𝐞𝐝𝐮𝐩!

Head over to GitHub to try it out! Happy ping-ing!

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Scott Milne (Milne Technologies) @milnetechnologies.ca · Dec 10

Do you have piles of Zip or CD-R disks tucked away that hold old DGN, DT4, ECH or SMP survey data?💾💽
Want to know what your lake looked like “back in the day”?
We can reprocess your vintage echogram data files using the latest software. We support legacy formats from Simrad, BioSonics and HTI. 💻🔊🐟

Picture showing a very old Toshiba Laptop running software for a vintage Simrad EY500 scientific echosounder. Also see on the wooden boat shelf is an old Kongsberg Mesotech SM2000 multibeam computer and a monitor showing a colourful multibeam swath echogram. To the right of the image is a Panasonic CF-30 Toughbook for running survey vessel navigation software. All of this tech was installed on the Harkness Lab vessel "Henley Hauler".

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Reposted by Scott Milne (Milne Technologies)

Acoustical Society of America @asa-news.bsky.social · Dec 9

#ASA187 Lay Language Paper

The Trump Rally Shooting: Listening to an Assassination Attempt
acoustics.org/the-tr...

The Trump Rally Shooting: Listening to an Assassination Attempt

When rifle fire interrupted Donald J. Trump’s campaign rally, more than two dozen user-generated recordings allowed rapid audio forensic interpretation.

acoustics.org

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