Katie Adler
@katherine-adler.bsky.social
Postdoc in Mechanical Engineering at the University of New Hampshire (views are my own). PhD from Cornell University.
Reposted by Katie Adler
✨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
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
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.
eos.org
September 11, 2025 at 2:45 PM
✨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
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
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...
July 21, 2025 at 9:41 PM
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...
if you're insterested in river nutrient dynamics, sediment transport, river restoration, etc., please check out our new paper on the impact of boulders on oxygen levels in streambeds.
dx.doi.org/10.1029/2024...
dx.doi.org/10.1029/2024...
Impact of Boulders and Boulder‐Induced Morphology on Oxic Volume of the Hyporheic Zone of Plane‐Bed Rivers
Boulders expand the hyporheic aerobic zone in plane-bed rivers under high, yet commonly occurring, flow conditions Boulder-induced morphological changes significantly deepen oxygen-rich zones in ...
dx.doi.org
July 11, 2025 at 3:27 PM
if you're insterested in river nutrient dynamics, sediment transport, river restoration, etc., please check out our new paper on the impact of boulders on oxygen levels in streambeds.
dx.doi.org/10.1029/2024...
dx.doi.org/10.1029/2024...
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-...
fyfluiddynamics.com/2021/05/how-...
July 9, 2025 at 6:51 PM
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-...
fyfluiddynamics.com/2021/05/how-...
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.
June 14, 2025 at 10:03 AM
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.
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
March 20, 2025 at 10:48 AM
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...
The Dexter FIRST robotics team won their first competition of the season. Go Dreads! frc-events.firstinspires.org/2025/MIMIL/p...
FIM District Milford Event presented by GM Milford Proving Grounds FRC Event Web : Playoff Results
Official playoff match schedule for the FIM District Milford Event presented by GM Milford Proving Grounds
frc-events.firstinspires.org
March 2, 2025 at 10:53 PM
The Dexter FIRST robotics team won their first competition of the season. Go Dreads! frc-events.firstinspires.org/2025/MIMIL/p...
Reposted by Katie Adler
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...
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.
www.unh.edu
January 10, 2025 at 8:29 PM
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...
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.
February 1, 2025 at 1:19 AM
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.
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.
January 31, 2025 at 4:39 AM
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.
Go Dreadbots! Team 3656 https://www.thebluealliance.com/team/3656
Watch the Archimedes Division compete at https://m.twitch.tv/firstinspires_archimedes
Watch the Archimedes Division compete at https://m.twitch.tv/firstinspires_archimedes
Dexter Dreadbots - Team 3656
FIRST Robotics Competition team from Dexter, Michigan, USA.
www.thebluealliance.com
January 31, 2025 at 4:39 AM
Go Dreadbots! Team 3656 https://www.thebluealliance.com/team/3656
Watch the Archimedes Division compete at https://m.twitch.tv/firstinspires_archimedes
Watch the Archimedes Division compete at https://m.twitch.tv/firstinspires_archimedes
Flexible vegetation generates ripples (i.e., capillary-gravity bow waves) as water flows by in a stream in #VallesCaldera National Preserve, New Mexico.
January 31, 2025 at 4:39 AM
Flexible vegetation generates ripples (i.e., capillary-gravity bow waves) as water flows by in a stream in #VallesCaldera National Preserve, New Mexico.
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
https://bit.ly/3tj4wxK
https://bit.ly/3tj4wxK
January 31, 2025 at 4:39 AM
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
https://bit.ly/3tj4wxK
https://bit.ly/3tj4wxK
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.
January 31, 2025 at 4:39 AM
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.
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.
January 31, 2025 at 4:39 AM
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.
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.
January 31, 2025 at 4:39 AM
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.
A beautiful day for #fieldwork with Dr. Seth Schweitzer. #fieldresearch
January 31, 2025 at 4:39 AM
A beautiful day for #fieldwork with Dr. Seth Schweitzer. #fieldresearch
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).
January 31, 2025 at 4:38 AM
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).
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.
January 31, 2025 at 4:38 AM
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.
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?
January 31, 2025 at 4:37 AM
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?
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 https://t.co/v0CxxSwbvR
January 31, 2025 at 4:37 AM
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 https://t.co/v0CxxSwbvR
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
January 31, 2025 at 4:37 AM
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