Lmst

Large Drainage Systems Produced Half Of Mars’ Ancient River Sediment
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https://doi.org/10.1073/pnas.2514527122 <-- shared paper
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https://www.thebrighterside.news/post/scientists-discover-16-giant-river-networks-on-ancient-mars-where-life-could-have-thrived/ <-- shared technical media article
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#water ##hydrology #dynamic #planet #Mars #extraterrestrial #ecosystems #drainage #landform
#drainageways #drainagesystems #Martian #terrain #geomorphology #geomorphometry #catchments #fluvia #pluvial #river #sediment #solarsystem #sedimentarybasins #life #habitable #sedimenttransport #topography #erosion #impact #crater #GIS #spatial #mapping #remotesensing #spacecraft #MRO #marsobservation #exploration #martian #MarsAttack

Spectrum Of The Lakes - Using Satellite Remote Sensing To Unveil Water Color In Minnesota's Sentinel Lakes For Water Quality Monitoring
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https://doi.org/10.1080/20442041.2025.2509528 <-- shared paper
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https://www.dnr.state.mn.us/fisheries/slice/index.html <-- shared DNR Sentinel Lakes monitoring programs
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#Satellite #RemoteSensing #hydrology #water #WaterColour #WaterQuality #Chromaticity #SentinelLakes #ecoregion #Minnesota #earthobservation #GIS #spatial #mapping #MidWest #US #waterresources #ecology #ecosystems #watersecurity #Landsat #OLI #surface #lake #waterbody #reflectance #tropic #wavelength #vegetation #catchments #vegetation #MDVW #forests #agriculture #farming #landuse #landcover #management #monitoring #protection

Periodic Variability in Baseflow in Headwater Streams of the Upper Colorado River - Implications for Runoff Efficiency
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https://doi.org/10.1111/1752-1688.70017 <-- shared paper
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#GIS #spatial #mapping #water #hydrology #waterresources #USWest #USA #Colorado #ColoradoRiver #ColoradoR #snowmelt #headwater #catchments #flow #baseflow #model #modeling #spatialanalysis #spatiotemporal #geostatistics #planning #groundwater #storage #USGS #periodicity #climatechange #climateforcing #statistics #runoff #rainfall #precipitation #snow

Physically-Based Hydrologic Modeling Using GRASS GIS - r.topmodel [tutorial]
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https://workshop.isnew.info/omu-2024-r.topmodel/ <-- link to technical resource / workshop / tutorial
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“This workshop will introduce r.topmodel (Cho 2000), the GRASS GIS module for a physically-based hydrologic model called TOPMODEL (Beven 1984)..."
#GIS #spatial #mapping #water #hydrology #Hydrologic #model #Modeling #GRASS #GRASSGIS #topmodel #workshop #tutorial #onlinelearning #TopographyModel #catchments #R #SAGA #module #ISPSO #particleswarmoptimization #algorithm #continuingeducation

screen shot - map / model details - catchments/watersheds overlain with stream vectors

screen shot - selecting study area in USGS's StreamStats online interface

screen shot - selecting NHD data for download in the USGS's TNM online interface

screen shot - splash screen - GRASS GIS + r.topmodel model example

Avoid Backtracking And Burn Your Inputs - CONUS-Scale Watershed Delineation Using OpenMP
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https://doi.org/10.1016/j.envsoft.2024.106244 <-- shared paper
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“HIGHLIGHTS
• A memory-efficient watershed delineation algorithm was introduced.
• The new algorithm uses a node-skipping depth-first search to save memory.
• Both input and output data are stored in a shared matrix to reduce required memory.
• It performed 95% faster than its CPU benchmark algorithm using 33% less memory.
• It can solve 50% larger problems than what the CPU benchmark algorithm can handle..."
#GIS #spatial #mapping #hydrology #water #code #algorithm #watershed #delineation #OpenMP #opensource #memory #efficient #CPU #benchmark #MESHED #model #modeling #largescale #catchments

photo - river flowing through incised terrain

graphic abstract - Memory-Efficient Watershed Delineation (MESHED)

figure - Illustration of self-destructiveness. Numbers indicate the discovery order of each cell from [paper's] Fig. 1(c).
W is the watershed ID for the outlet. See [paper's] Fig. 1(a) for cell IDs.

figure - Illustration of NSDFS. Blue arrows indicate flow directions and the red cell is the outlet cell. Green and yellow cells have an NIDP of 0 and 1, respectively.

Alpine Catchments’ Hazard Related To Subaerial Sediment Gravity Flows Estimated On Dominant Lithology And Outcropping Bedrock Percentage
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https://doi.org/10.3390/geohazards5030034 <-- shared paper
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#GIS #spatial #mapping #debrisflow #gravityflow #hyperconcentrated #flow #alluvialfan #rainfall #threshold #ItalianAlps #italy #engineeringgeology #massmovement #landslides #water #hydrology #rheology #soil #model #modeling #morphology #spatialanalysis #spatiotemporal #sedimentgravityflow #risk #hazard #alpine #mountain #catchments #elevation #slope #steepness #trigger #lithology #geomechanics #geomorphology #geomorphometry #morphology #sediment #SusaValley #history #geology #bedrock

photo - August 14th 2023 - "Streets and cars in Bardonecchia, a city near Turin in the Val di Susa mountain valley, were coated in thick, grey sludge following the violent mudslides late on Sunday."

map - lithology of the Susa Valley, Italy

map - A total of 78 catchments having recorded SGF/SFF historical events with assigned ID number.

photo and schematics - (a) Boulder-train deposit for catchment belonging to group CCBR (example from Rio Secco—ID 69). Note low-angle imbricated clasts and absence of matrix. (b) Schematization of cross section, longitudinal section and plan view of levee deposit. (c) Schematization of clasts’ orientation and size distribution in longitudinal section view. (d) Statistical distribution of clasts’ (>20 cm) intermediate axis (b) orientation from up to down slope.

Why Snow Is Crucial For Water Supply
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https://doi.org/10.1038/d41586-024-01239-6 <-- shared technical article
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https://doi.org/10.1038/s41586-024-07299-y <-- shared paper
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#GIS #spatial #mapping #modeling #cryosphere #water #hydrology #waterresources #watersecurity #springmelt #snowpack #snowmelt #climatechange #snow #rain #precipitation #streamflow #predictions #model #modeling #ecosystems #timing #samping #spatialanalysis #spatiotemporal #sampling #measurements #monitoring #catchments #interannual #annual #seasonal

$maps - Spatiotemporal patterns of snowfall fraction and streamflow seasonality across 3,049 catchments over 1950–2020$ $charts - Impacts of declines in snowfall fraction on the interannual variability of streamflow seasonality$ $charts - Impacts of temporal changes in snowfall fraction on streamflow seasonality$

photo - stream with snowmelt, Colorado Rockies

Lake Wānaka Mapped In Exquisite Detail [topobathy, New Zealand]
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https://niwa.co.nz/news/lake-wanaka-mapped-exquisite-detail <-- shared technical article
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#GIS #spatial #mapping #hydrospatial #bathymetry #remotesensing #LakeWanaka #Wanaka #NewZealand #topobathy #lake #floor #water #hydrology #survey #underwater #geology #geomorphometry #earthquake #fault #faulting #NIWA #lakebed #glacial #glacier #multibeam #echosounder #3dmodel #waterquality #landuse #freshwater #nutrients #sediment #sedimentation #climatechange #model #modeling #catchments #hydrodynamics
@niwa_nz

3D graphic of high-resolution bathymetry data retrieved from Wānaka lakebed mapping project.

Close-up image of bathymetry data for the southern part of Lake Wānaka.

photo - Lake Wānaka mapping project team onboard RV Rukuwai II with multibeam echosounder attached to the bow of the research vessel.

Watershed Delineation On A Hexagonal Mesh Grid
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https://doi.org/10.1016/j.envsoft.2020.104702 <-- shared paper
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#GIS #spatial #mapping #model #modeling #Hydrology #Hexagon #WatershedDelineation #DigitalGlobalGridSystem #DGS #watershed #water #delineation #scaling #discretization #discretisation #simulations #numerical #adjacency #d8 #HexWatershed #watersheds #catchments #drainageareas

schematic - Illustration of the stream topology. Different colors represent 4 different stream segments, respectively. Each stream segment is made up by several stream reaches.

aerial photo - oblique - meanders and a bridge on a portion of the Columbia River, WA, USA

schematic - The relationship between watershed delineation and surface hydrology.

maps and charts - The spatial location, surface elevation and slope distribution of the CBF watershed. Upper left is the location on Google Map; Upper right is the histogram of surface slope (degree); and bottom is the spatial distribution of surface elevation (m).

Review Of Methodology For Estimating Flood Peaks And Hydrographs For Small Catchments [UK]
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https://www.gov.uk/flood-and-coastal-erosion-risk-management-research-reports/review-of-methodology-for-estimating-flood-peaks-and-hydrographs-for-small-catchments <-- shared technical article
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#GIS #spatial #mapping #model #modeling #spatialanalysis #floodinnundation #flooding #flood #UK #england #wales #floodestimation #catchments #ungauged #rural #urban #FEH #hydrology #water #risk #hazard #spatiotemporal #guidelines #tools #techniques #gauges #estimates #hydrograph

photo - flooding with canal boat and swans in front yard of semi-detached houses

83% Of English Rivers Have Evidence Of High Pollution From Sewage And Agriculture
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https://www.theguardian.com/environment/2024/jan/30/english-rivers-pollution-sewage-agriculture-uk <-- shared media article
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#GIS #spatial #mapping #watersecurity #waterquality #UK #england #britain #pollution #sewerage #citizenscience #watertesting #monitoring #communityengagement #angling #anglers #spatialanalysis #AnglingTrust #regulations #EUstandards #brexit #ecosystems #habitat #fish #biology #farming #agriculture #runoff #fertiliser #watercompanies #privateindustry #phosphate #phosphates #ecology #healthy #failure #aquatic #habitatloss #forprofit #algae #algalbloom #policy #planning #neglect #politics #water #hydrology #catchments #pollutionstandards #rivers #streams
@AnglingTrust

photo - dead fish and eels in a polluted English stream

photo - sewage and pollution floats on flood water on Cookham Moor in Berkshire

Vermont researchers have developed a #MachineLearning model to improve the National #Water Model's #streamflow predictions in mountainous areas, setting a precedent for nationwide application in similar terrains.

"Assessing and Improving National Water Model Performance in #Montane Headwater #Catchments" Thursday afternoon at #AGU23.

🔗🗓️ https://bit.ly/agu23121406

Megafloods In Europe Can Be Anticipated From Observations In Hydrologically Similar Catchments
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https://www.nature.com/articles/s41561-023-01300-5 <-- shared paper
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#GIS #spatial #mapping #hydrology #model #modeling #flood #flooding #megaflood #risk #hazard #europe #numericmodeling #regional #prediction #measurements #floodmodeling #streamflow #streamgauge #continental #catchments #mitigation #observation #observations

data plot - predicted versus observed megafloods

charts - envelope curves for three catchments with recent megafloods in Europe

"#Watershed models confirm that #dust nutrients delivered to mountain #catchments are transported to #freshwater systems in sufficient amounts to influence the #ecology."

Join #University of #Utah-based Cluster Member Janice Brahney for a Dust Alliance for North America webinar discussing this as part of Dust composition and effects in the #American #West.

Details and registration: https://bit.ly/45j10UE

⏳Last chance of the season to attend our #WATSONwednesday!⏳
💦Sebastian Gebler talks about the potential use of #transittimes linking #hydrology and #transport.
More info and registration in our website https://watson-cost.eu.
👉7 June 12:30 CEST 👈

#stakeholder #catchments #modelling #plant #protection

Thanks to Paolo Benettin for his great #WATSON #seminar on #transit #time #estimation.
Next seminar will be 1 March at 12:30 CET with Harsh Beria.
DO NOT MISS IT! Visit our website https://watson-cost.eu/ to register! #water #catchments #evapotranspiration #modelling #data

REMINDER!
1 February 12:30 CET
WATSON Wednesdays with Paolo Benettin
https://watson-cost.eu/2023/01/29/watson-wednesdays-paolo-benettin/
#water #transittime #stableisotopes #catchments

Deadline is February 1st, 2023!!!
There is still time to apply for a short term scientific mission. Do not miss the opportunity to breath #water #stable #isotopes! All info here https://watson-cost.eu/getting-involved/stsm/
#hydrology #catchments #plant #physiology #criticalzone #STSM

Superb resource on monitoring of global #water, including fabulous data explorer on #climate, #soil waters, #catchments and #rivers and also an annual report on global water in 2022 in the context of #climatechange and La nina.
Find out more on:
https://wenfo.org/globalwater/

Data Explorer on Global Water Monitor - check out the website from post to access this tool.

WATSON Wednesday NEWS! Today, we thank Adrià Barbeta Margarit for his very interesting webinar on #Isotopic #discrepancies in #plant #water pools and their sources.
The next seminar will be the 11/02. Paolo Benettin will talk about #Transit #time estimation in #catchments.

To register, visit our website https://watson-cost.eu/wednesdays-with-watson/

#catchments

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