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Katie Adler @katherine-adler.bsky.social · 29/09/2026

It was breezy in #Acadia this weekend. If you look closely at this picture of Jordan Pond, you can see white lines perpendicular to the wave crests. These are signs of Langmuir cells, long roller vortices that are generated by wind-wave interactions. Relevant paper: www.cambridge.org/core/journal...

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Katie Adler @katherine-adler.bsky.social · 04/04/2026

Happy #FlumeFriday! Here are rough videos of the display from an IR camera looking down at a horizontal jet in Zeeshan Saeed's experimental setup. Do you notice a greater range of turbulence length scales in the faster jet?

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Katie Adler @katherine-adler.bsky.social · 18/02/2026

If you will be at OSM26 next Thursday, please check out the "Sediment Transport in the Nearshore Ocean[...]" sessions (links to programs below). eppro02.ativ.me/appinfo.php?... eppro02.ativ.me/appinfo.php?...

eppro02.ativ.me

OSM26

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Reposted by Katie Adler

JGR: Oceans @jgroceans.bsky.social · 11/09/2025

✨Editor's Pick✨ A detailed numerical model shows how sediment particles experience wave-driven shear stress inside and above a sea bed with sand ripples. 🔗Learn more in @eos.org : eos.org/editor-highl... #AGUPubs #OceanScience #Seafloor #STEM @agu.org

eos.org

A First Look at How Sand Behaves Inside a Rippled Bed - Eos

A detailed numerical model shows how sediment particles experience wave-driven shear stress inside and above a sea bed with sand ripples.

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Katie Adler @katherine-adler.bsky.social · 21/07/2025

If you're researching nearshore sediment transport, please consider submitting an abstract to the #AGU Ocean Sciences Meeting 2026 session, CP012: Sediment Transport in the Nearshore Ocean: Insights from Field, Laboratory, and Numerical Experiments. agu.confex.com/agu/osm26/pr...

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Katie Adler @katherine-adler.bsky.social · 09/07/2025

Impressive hummingbird aerodynamics in Durham, NH. They beat their wings at around 40 Hz (this is a Live Photo, so not very high frame rate). Check this link for a fun fact about hummingbirds from @nicolesharp.com fyfluiddynamics.com/2021/05/how-...

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Katie Adler @katherine-adler.bsky.social · 14/06/2025

Happy late #FlumeFriday. Here is a top view of sand ripples formed in the EFWT at UNH using oscillations of an amplitude 8 cm and a period of 2 s. The distance between ripple crests is about 6 cm and the sand is fine (median gran size is around 0.2 mm). these ripples affect coastline evolution.

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Katie Adler @katherine-adler.bsky.social · 20/03/2025

A new article by Monsalve et al. describes how data from lab experiments and numerical simulation were used to investigate physical forces that influence water quality and GHG emissions of rivers, particularly the role of gravel and plants. (Free for 50 days). authors.elsevier.com/c/1knyB16J1n...

authors.elsevier.com

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Reposted by Katie Adler

Tracy Mandel @tmanatee.bsky.social · 10/01/2025

Updated to *3* CEPS professors! Incredibly excited and honored to lead this project studying the physical mechanisms that drive marine disease transmission in seagrass and coral ecosystems www.unh.edu/unhtoday/202...

unh.edu

Three CEPS Professors Honored With NSF CAREER Awards

Three professors from the College of Engineering and Physical Sciences (CEPS) at UNH have been awarded the esteemed National Science Foundation (NSF) Faculty Early Development (CAREER) award.

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Katie Adler @katherine-adler.bsky.social · 01/02/2025

Happy #FlumeFriday! I started making sand ripples in the environmental flows water tunnel at #UNH. The oscillatory flow pushes the sand at the crests back and forth and creates vortices downstream (leeward side) of the ripples.

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Katie Adler @katherine-adler.bsky.social · 09/12/2024

Funneling ocean #waves on the coast of Maine near Ogunquit, about 1 hr after low tide.

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Katie Adler @katherine-adler.bsky.social · 13/07/2024

For #FlumeFriday, here are sand ripples (aka ridges, ribbons, or waves) at Ludington, MI. They form due to the orbital flow under waves. They can also form due to current-driven eddies, like in rivers, but current-formed ripples tend to be less regular and less symmetrical.

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Katie Adler @katherine-adler.bsky.social · 20/03/2023

Flexible vegetation generates ripples (i.e., capillary-gravity bow waves) as water flows by in a stream in #VallesCaldera National Preserve, New Mexico.

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Katie Adler @katherine-adler.bsky.social · 10/11/2022

A lot of great research was presented at the GTWS Symposium in May. If you'd like to read a bit about factors impacting fluxes of gases, like CO2, into and out of water bodies, from the Arctic to the tropics, check out this event report by @SOLAS_IPO bit.ly/3tj4wxK

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Katie Adler @katherine-adler.bsky.social · 29/09/2022

A #beaver dove under our measuring tape while a group of us from the Center for Ecohydraulics Research (UIdaho) collected data at a #riverrestoration site near La Grande, OR.

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Katie Adler @katherine-adler.bsky.social · 09/09/2022

Bow waves from the DeFrees Lab for #FlumeFriday. (Left) from iPhone 12. (Right) from Zyla 5.5 sCMOS camera. The right image was using 16-bit setting rather than 12-bit, so smoother transitions between intensity levels (smaller quantization step) but lower fps and bigger file.

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Katie Adler @katherine-adler.bsky.social · 18/06/2022

After a ferry approaches #mackinacisland, some of the bow #waves generated by its high speed are reflected off the rubble breakwater and overlap with incident waves leading to interesting breaking patterns near shore.

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Katie Adler @katherine-adler.bsky.social · 06/08/2021

A beautiful day for #fieldwork with Dr. Seth Schweitzer. #fieldresearch

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Katie Adler @katherine-adler.bsky.social · 20/11/2020

There are 2 banded #Cloud generation mechanisms and both are related to my research: 1) bands form parallel to the wind due to roller vortices (left image observed today) 2) bands form perpendicular to wind due to gravity waves, like in front of a boat (right image from today).

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Katie Adler @katherine-adler.bsky.social · 05/11/2020

I saw melting #water flowing under ice. The time during which the water is in the camera field of view depends on how steep or how tortuous the water’s path is. #hydrology.

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Katie Adler @katherine-adler.bsky.social · 04/01/2020

It looks like there’s some stably stratified shear flow by he mountains in CO today. #clouds

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Katie Adler @katherine-adler.bsky.social · 15/10/2019

Spotted more banded #clouds when queuing for Friends of the Library book sale this weekend.

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Katie Adler @katherine-adler.bsky.social · 04/10/2019

I saw banded #clouds again. It looks like internal gravity waves (IGW) formed because stably stratified air at the stratocumulus cloud layer was disturbed by an updraft, for example. IGW transport momentum and energy. What can the clouds near you tell you about atmospheric flows?

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Katie Adler @katherine-adler.bsky.social · 26/07/2019

Waves are short upstream of objects in a flow and long downstream because 1 flow speed (V) corresponds to 2 possible values of wavelength (λ) (V=(gλ/2π+Υ2π/ρλ)^.5). Short (capillary) ones are upstream because they convey energy faster than the long (gravity) ones #FlumeFriday t.co/v0CxxSwbvR

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Katie Adler @katherine-adler.bsky.social · 19/07/2019

Wave trains can form leeward of obstacles in open channel flow (Left: 6-cm-wide flume at #FDSE. Right: Hermit rapids in the Grand Canyon has 10 waves.) They appear stationary because they propagate at the speed of the mean flow, like running on a tread mill #FlumeFriday

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Katie Adler @katherine-adler.bsky.social · 31/05/2019

Thanks, Jack Powers, for helping us get the long-stroke wave tank running on this #FlumeFriday (see slo-mo video below). The way shoaling waves break depends on the beach slope, wave height, and wavelength in deep water (i.e. the Iribarren number).

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Katie Adler @katherine-adler.bsky.social · 15/05/2019

Thank you NYS Hemlock Initiative for inviting Ian Kranz and me to share our phenology video at your open house. It's great to learn more about #HWA and how it's impacting the local community. The video, made with help from @CornellEngComm & @FLLandTrust as well, coming soon.

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Katie Adler @katherine-adler.bsky.social · 03/05/2019

Had a great time with @rose_buchmann at #CornellEYH last weekend. Here’s a late video of the girls’ marshmallows shrinking after having their air sucked out by vacuum pressure. Comparable to an unprotected human in space? I wonder what the pressure was in there. #CornellEngComm

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Katie Adler @katherine-adler.bsky.social · 03/05/2019

Here are more capillary-gravity bow waves for #FlumeFriday I think its’s interesting to see how quickly the wave amplitude decreases as you move away from the disturbance. Short waves like these dissipate faster than long waves. The dowel is 1/8” , for scale. #CornellEngComm

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Katie Adler @katherine-adler.bsky.social · 03/05/2019

Did you know sunsets appear red because the sun’s rays are passing through more atmosphere, and red, as the longest visible wavelength, is not scattered as much as other colors? Also, some of these clouds look wavy; could there be stable stratification? #CornellEngComm

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Katie Adler @katherine-adler.bsky.social · 23/04/2019

Great talk on making #scicomm videos by @fyfluiddynamics Nicole Sharp. Some takeaways include: using animations to keep the audience focused, visualizing ideas when you don't have time to make an animation, and more. (projected background looks different with my phone camera)

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Katie Adler @katherine-adler.bsky.social · 19/04/2019

The #BlackHole image unveiled this week was taken by 8 telescopes in the #EventHorizonTelescope project. One is in this picture I took (left) on Maunakea in 2016. The James Clerk Maxwell Telescope; Submillimeter Array is the white, cylindrical structure on the far left in shadow.

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Katie Adler @katherine-adler.bsky.social · 19/04/2019

There are some nice #flowers at @Cornell: - Cherry blossoms - daffodils (pseudo-narcissus) - daffodils (Lingerie) Not sure about the first one, though. Apparently cherry blossom trees don't have noticeable leaves and have short, wide, overlapping petals. #CornellEngComm

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Katie Adler @katherine-adler.bsky.social · 13/04/2019

There are nice capillary waves at Flat Rock. Reminds me of the flume. That water is probably getting great gas exchange with the air. #FlumeFriday #CornellEngComm

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Katie Adler @katherine-adler.bsky.social · 06/04/2019

I'm excited for #GirlScouts Engineering Day with Cornell BMES. I'll be helping with an activity looking at how the heart works. We'll construct "left ventricle and atrium" sets inspired by the model idea below. Our bodies have oneway valves! #CornellEngComm

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Katie Adler @katherine-adler.bsky.social · 29/03/2019

Fred found a 1959 article about the construction of Hollister Hall, where @CEECornell is now housed. It says it cost around $1.5 million (= ~ $15.6 million today), replaced the Old Armory, & used to have a transportation lab by the hydraulics lab. #CornellEngComm

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Katie Adler @katherine-adler.bsky.social · 29/03/2019

It's always interesting to see the reflections off the water surface in the flume, but it's going to make 3D imaging/mapping more challenging. #FlumeFriday #CornellEngComm

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Katie Adler @katherine-adler.bsky.social · 22/03/2019

The #GoPro comes in handy again today for more underwater #FlumeFriday wave shots. It's sitting on the flume bed looking upstream. #CornellEngComm

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Katie Adler @katherine-adler.bsky.social · 22/03/2019

With Dr. Seth Schweitzer, taking some infrared images of the water surface in the teaching flume today, #FlumeFriday. Check out these temperature patterns (darker color = colder). The second image has a little kármán vortex shedding. #CornellEngComm

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Katie Adler @katherine-adler.bsky.social · 15/03/2019

Another CEE GSA Research Symposium has come and gone. I appreciate all of the judges, volunteers, participants, and audience members. Kudos to the research symposium chairs, Leo and Vish. I think #CornellEngComm helped me get 2nd place on the oral presentation. t.co/ue4SwHZGvP

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Katie Adler @katherine-adler.bsky.social · 15/03/2019

It was awesome having @JadAbumrad talk to our Storytelling in STEM #CornellEngComm class this week. One of his tips for telling a great story was to include voices from people who combine passion for and expertise on the topic. Examples can be found here: t.co/KhlQAEL9fU t.co/NG2...

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Katie Adler @katherine-adler.bsky.social · 11/03/2019

My dad, Jon Adler, took this picture back in MI: "From a few weeks ago. Feathery ice crystals formed in the lee of individual branches. Freezing fog with light breeze" #Nature #weather #crystals

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Katie Adler @katherine-adler.bsky.social · 01/03/2019

Another reason why citizen science phenology (observing the timing of cyclic natural phenomena like insect migration and hatching) is valuable. Here's another quick article on the subject of declining insects: t.co/yvjLlHT9HR #CornellEngComm t.co/ilh7oUpaNy

theguardian.com

Plummeting insect numbers 'threaten collapse of nature'

Exclusive: Insects could vanish within a century at current rate of decline, says global review

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Katie Adler @katherine-adler.bsky.social · 01/03/2019

Fun facts from solar class today #Cornell #CornellEngComm: Birds killed/MW/year for U.S: Solar: 10 Wind: 11 Fossil: 74 Birds killed / year in U.S. due to: Solar plants: 90,000 Fossil plants: 14 million Cars: 300 million Domestic cats: 2 billion Source: Walston et el. (2016)

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Katie Adler @katherine-adler.bsky.social · 23/02/2019

The ping pong ball spirals along with Stokes Drift in the wave tank, but doesn't seem very happy about it. #flumefridays #CornellEngComm

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