Data Repository for U of M (DRUM) is a publicly available collection of digital research data generated by U of M researchers, students, and staff. Anyone can search and download the data housed in the repository, instantly or by request.

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Data Repository for U of M (DRUM)

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Recent Submissions

Now showing 1 - 20 of 1010
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    Experimental data of the log-induced hyporheic flow experiment in the 6-inch flume of St. Anthony Falls Laboratory in 2023 (4 GB)
    Shih-Hsun, Huang; Judy Q., Yang;; Judy Q., Yang; University of Minnesota Environmental Transport Lab
    We conducted flume experiments to study how two in-line channel-spanning logs affect surface flow and hyporheic flow in a channel. The dataset comprises data and results obtained from measurements of water surface elevation profiles, particle image velocimetry (PIV) measurements, and visualizations of fluorescent dye transport in the sediment bed around the channel-spanning log. The Matlab scripts used to process the data are also included.
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    Experimental earthquake duct videos, Seibert et al. 2024
    Paola, Chloe;; Paola, Christopher; University of Minnesota St Anthony Falls Laboratory Earthquake Research
    The largest earthquakes are infrequent and poorly understood. We propose that seismic waves from major subduction earthquake ruptures can move the overlaying sea floor relatively to the water vigorously enough to entrain sediment. We used physical tank experiments to test and further develop this model. We show that relative water velocities consistent with long-period earthquake motion can mobilize synthetic fine marine sediment, and that high frequency vertical shaking can enhance this mobilization. Earthquake-induced seafloor motion for Tohoku-like earthquakes can entrain several centimeters of surficial sediment, depending on sediment characteristics including clay type, grain size, water content and salinity. High-frequency vertical shacking can enhance this entrainment. We have validated a new mechanism of co-seismic sediment entrainment in deep-water environments. The data archived here are videos of these physical tank experiments.
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    3D Printed Organisms Enabled by Aspiration-Assisted Adaptive Strategies
    Han, Guebum; Khosla, Kanav; Smith, Kieran T; Ng, Daniel Wai Hou; Lee, JiYong; Ouyang, Xia; Bischof, John C; McAlpine, Michael C;; Han, Guebum; University of Minnesota McAlpine Research Group; University of Minnesota Bischof Research Group
    Devising an approach to deterministically position organisms could impact various fields such as bioimaging, cybernetics, cryopreservation, and organism-integrated devices. This requires continuously assessing the locations of randomly distributed organisms to collect and transfer them to target spaces without harm. Here we developed an aspiration-assisted adaptive printing system that tracks, harvests, and relocates living and moving organisms on target spaces via a pick-and-place mechanism that continuously adapts to updated visual and spatial information about the organisms and target spaces. These adaptive printing strategies successfully positioned a single static organism, multiple organisms in droplets, and a single moving organism on target spaces. Their capabilities were exemplified by printing vitrification-ready organisms in cryoprotectant droplets, sorting live organisms from dead ones, positioning organisms on curved surfaces, organizing organism-powered displays, and integrating organisms with materials and devices in customizable shapes. These printing strategies could ultimately lead to autonomous biomanufacturing methods to evaluate and assemble organisms for a variety of single and multi-organism-based applications.
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    Angelo Basic GIS Coverages
    Bode, Collin;; Bode, Collin; National Center for Earth-Surface Dynamics (NCED)
    Projection: UTM, zone 10, datum NAD83. GIS file format: ESRI Shapefile for vector, ESRI arcinfo binary GRID format for raster. Data Sources: National Center for Airborne Laser Mapping (NCALM, Lidar DEM of the South Fork Eel watershed at Angelo reserve was created by NCALM. This data is new and still is being post processed. The dem is extremely high quality (1m resolution). California Spatial Information Library (CASIL, public and federal datasets, including USGS drg, doqq, and blue-line datasets. Naming Conventions: This is not strictly followed. Files start with their spatial scale and end with their projection. Maps will often end with their DPI resolution. Eel: entire eel watershed Sfk: South Fork Eel Nfk: North Fork Eel Angelo: Angelo Reserve
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    Eel River Steelhead Study [2007]
    Power, Mary;; Power, Mary; National Center for Earth-Surface Dynamics (NCED)
    Throughout the world, historically large populations of native anadromous salmonids are in severe decline or extinct. In the United States alone, twenty-six Evolutionarily Significant Units of Pacific salmonid are currently threatened or endangered. These declines are most commonly attributed to degradation of spawning and rearing habitat resulting from increased loading of fine sediments. Although excessive loading of fine sediments into rivers is well known to degrade salmonid spawning habitat, its effects on the demographically critical rearing juveniles have been unclear. We experimentally manipulated fine bed sediment in a northern California river and examined responses of a juvenile salmonid. Increasing concentrations of deposited fine sediment decreased growth and survival of juvenile steelhead trout. These declines resulted from a shift in invertebrates toward burrowing taxa unavailable as prey and from increased steelhead activity and injury at higher levels of fine sediment. The relationship between deposited fine sediment and juvenile steelhead growth is linear. This suggests that there is no threshold below which exacerbation of fine sediment delivery and storage in gravel bedded rivers will be harmless, but also that any reduction will produce immediate benefits for salmonid restoration.
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    Complete data and statistical code for: Seeding roadsides is necessary but not sufficient for restoring native floral communities
    Mitchell, Timothy S; Verhoeven, Michael R; Darst, Ashley L; Patterson, Cate; Snell-Rood, Emilie C;; Mitchell, Timothy S
    These data were collected in support of a Minnesota Department of Transportation funded study evaluating roadside plantings. The goal of our study was understand how roadside pollinator forage is affected by planting pollinator-friendly seed mixes in roadsides in Minnesota, USA. We used a field study of mixed-age roadside plantings to assess this flower diversity in roadsides planted with status quo non-native seed mixes to those planted with pollinator friendly, native seed mixes. We found that while these native seed mixes did increase the abundance of native flowers, the roadsides' flower communities of native and non-native seedmixes converged through time to grass dominated and unplanted colonizing species. This repository contains the complete datasets as a comma-separated-value files and Program R code necessary to replicate the data prep, exploration, analysis, and visualizations presented in the manuscript.
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    USDA-ARS Phenocart RGB Imagery Collected in Brookings, SD in 2021
    Ewing, Patrick; Runck, Bryan;; Ewing, Patrick; Real-time Geoinformation Systems Lab, GEMS Informatics Center
    Data were collected from an experimental field in 2021 at the Eastern South Dakota Soil and Water Research Farm in Brookings, SD, USA (44.351 N, 96.805 W). The experiment consisted of a number of oat (Avena sativa L.) variety-by-seeding-rate treatments that were further divided into medium red clover planting treatments in a strip-block design with four replicates and a plot size of 6 m by 6 m. Oat treatments crossed variety (Reins, Natty, Sumo) and target oat population (140, 220, and 320 plants m-2) in 19 cm, drilled rows; red clover showed no responses to these oat treatments. Red clover treatments compared clover planted concurrently with oats (“underseeded”) on April 28, 2021; planted after oat harvest (“post-harvest”) on August 12, 2021; or no clover (“fallow”). Red clover was drilled at 1.25 cm depth at a rate of 8.2 kg ha-1 at a row spacing of 19 cm. An herbicide application of 210 g ha-1 sethoxydim (Poast, BASF Crop Protection, Research Triangle Park, North Carolina, USA), which selectively targets monocots, was applied on August 20, 2021, to control volunteer oats. A total of 720 RGB JPEG images were collected over six dates. The dates span the emergence of the post-harvest red clover planting to the first killing frost: August 21st, September 9th, September 29th, October 5th, October 15th, and October 25th. Images were collected by a Canon PowerShot ELPH 190 IS at a height of 2.5 m in the center of each plot using a phenotyping cart (White & Conley, 2013). To mirror the simplest use by researchers and practitioners, the camera was configured in full default, automatic mode, including ISO (a standard setting for controlling image darkness) and white balance and a 74-degree horizontal field of view. One image was taken from a representative location per plot on each date.
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    UNDER CURATORIAL REVIEW: Eel River Flipchart [2007]
    Bode, Collin; Power, Mary; Power;; Bode, Collin; National Center for Earth-Surface Dynamics (NCED)
    This is a 34 page flipchart of the Angelo Reserve. Each page is an 8.5x11 map of a river segment. The maps show the location of the highest accumulated streamflow (using DEM) as the river, even though the channel is wider, and use the vegetative canopy DEM colored by vegetation height. Note the decision to use canopy instead of the traditional bare-earth is to provide visual references while out in the field. Bare-earth provides little help when maps are zoomed in this close. Laminated versions will be availible at the ACCR Science Center to be used during field sampling. Sampling sites can be drawn directly on the maps with a sharpie then removed later using alcohol. Marked up maps are to be either copied using the xerox machine, or scanned. Scanned versions can be sent to Collin Bode to convert the points into a GIS coverage.
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    Damage measurements and reproductive outcomes following phenologic delay and floral freezing of a population of Prunus pumila plants
    (2024-06-06) Lake Diver, Danielle A; Savage, Jessica A;; Savage, Jessica; Savage research team
    There are advantages flowering early in the spring, which include greater pollinator fidelity and longer fruit maturation time. But plant phenology has advanced in recent years making many plants vulnerable to freezing damage from late frosts. To determine the costs and benefits of flowering early in the spring, we exposed Prunus pumila plants to two freezing treatments and a delayed flowering treatment in subsequent years. Data were collected on ovary swelling, fruit production and pollinator visitation on hand-and open-pollinated plants in all treatments. We also measured tissue damage after freeze events. Our results suggest that flowering time and temperature affect reproductive success, with fewer fruits produced after hard freezes. The same was not true for light freezes, which had minimal impact on reproduction. Freezing damage to plants after a hard freeze did affect the number of Dipteran pollinators but not the overall pollinator visitation rate. Despite the clear impact of freezing temperatures on plant reproduction, there were also advantages for flowering early as reproductive output decreased during with delayed flowering. Our findings suggest that Prunus pumila will retain the ability to attract pollinators and produce viable seeds if exposed to false spring conditions that involve a light freeze, but hard freezes may reduce yield by an order of magnitude. Although the advantages to flowering early may outweigh the risk of freezing damage under current conditions, it is possible that flower viability may be constrained under continued climate warming.
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    Data and R-code for: “Integrating DNA fingerprinting of invasive watermilfoil strains into aquatic vegetation monitoring and assessment”
    (2024-06-06) Gannon, Kathryn A; Newman, Raymond M; Thum, Ryan A;; Newman, Raymond M; Minnesota Aquatic Invasive Species Research Center (MAISRC)
    Invasive Eurasian watermilfoil (Myriophyllum spicatum L.) hybridizes with native northern watermilfoil (Myriophyllum sibiricum Komarov). Previous genetic studies have identified numerous distinct Eurasian and hybrid strains that can differ in their invasiveness (e.g., growth and potential for spread) and response to herbicides. To identify problematic or invasive strains of watermilfoil we assessed the response of different watermilfoil strains to aquatic vegetation management in eight Minnesota lakes over the course of 3 yr. Specifically, we looked for changes in strain composition of watermilfoil populations over time to identify strains of specific interest for further characterization of growth and herbicide response. Eurasian watermilfoil was collected from point intercept surveys (125 to 230 points at each waterbody) before and after herbicide treatments and generally twice per year over 3 years. Plants were idented to genotype using microsatellite markers and changes in genotype occurrence and frequency were assess for changes over time and in response to treatment. Additional details and methods are presented in Gannon et al. 2022.
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    Eel River 10m Digital Elevation Models (DEM) [2007]
    (2024-06-06) Bode, Collin;; Bode, Collin; National Center for Earth-Surface Dynamics (NCED)
    Eel Watershed digital elevation models (DEM). This DVD contains DEMs of the entire Eel River watershed. The Eel River is located mostly in Mendocino County on the coast of California. The source data for these DEMs comes from NED, USGS. Source data was 10x10 meter resolution in ESRI ArcInfo grid format and in geographic (lat/long) projection with NAD83 datum. It was downloaded from: The National Center for Airborne Laser Mapping (NCALM) processed the source grids as follows: 1. merged the tiles into one grid. 2. reprojected from geographic to UTM, zone 10, nad83 projection using bilinear interpolation. 3. Ran a series of analyses on the dataset to produce the following DEMS eel10mdem: Basic grid of elevation, 10m resolution eel10mdemacc: Flow accumulation. Grid shows how many other grids flow into each square. Used for watershed delineation and for channel creation. eel10mdemdir: Azimuth. Shows direction from north a grid cell is facing. Only 8 directions used, moving clockwise. eel10mdemfil: Sinkfill.To get the flow accumulation, you must fill holes and pockets in the elevation model. This grid is essential a step in the processing. eel10mdemshd: Hillshade. Models realistic afternoon sun hitting the elevation model. Excellent for visualization. Any questions should be directed to NCALM. Dino Belugi can answer processing questions. Collin Bode can answer general questions about the dataset.
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    Minnesota lake ice phenology
    (2024-06-04) Walsh, Jake R; Vitense, Kelsey; Rounds, Christopher I; Peter, Boulay; Blumenfeld, Kenneth; Hansen, Gretchen JA;; Rounds, Christopher I; University of Minnesota Fisheries Systems Ecology Lab
    This dataset contains ice in, ice out and ice duration data for Minnesota lakes that have been collated by the Minnesota Department of Natural Resources State Climatology Office. Lake ice has been recorded by lake associations, community members and scientists throughout Minnesota. The definition of lake ice in and out can vary from lake to lake but observers generally use consistent criteria for determining the day ice formation occurs or ice melts for a lake. For more information see the Minnesota DNR lake ice in ( and ice out ( websites.
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    Dynamics of double-knotted DNA molecules under nanochannel confinement
    (2024-05-30) Mao, Runfang; Dorfman, Kevin D.;; Dorfman, Kevin D.; Dorfman Research Group - University of Minnesota Department of Chemical Engineering and Materials Science
    This dataset contains the output files and associated codes from the simulation in "Dynamics of double-knotted DNA molecules under nanochannel confinement". Langevin dynamics simulations were used to investigate the two knot dynamics and interactions in nanochannel confined DNA molecules. With this dataset, users should be able to regenerate the figures that appeared in the paper.
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    Supporting Data for Ring-Opening Copolymerizations of a CO2-derived δ-Valerolactone with ε-Caprolactone and L-Lactide
    (2024-05-30) Anderson, Ryan A; Fine, Rachel F; Rapagnani, Rachel M; Tonks, Ian A;; Tonks, Ian; University of Minnesota, Tonks group
    These files contain primary data along with associated output from instrumentation supporting all results reported in Anderson et. al. Ring-Opening Copolymerizations of a CO2-derived δ-Valerolactone with ε-Caprolactone and L-Lactide. This work has expanded the synthetic polymer chemistry of the CO2-derived lactone EtVP through ring-opening co-polymerizations with ε-CL and LLA. Polymer properties and microstructures could be tuned through concurrent and se-quential copolymerization strategies, which led to the formation of either block, gradient, or random copolymers. ε-CL block copolymers resulted in semi-crystalline polymers regardless of the molar ratio employed. For LLA, copolymers remained amorphous, and mechanical testing showed improved elasticity relative to PLLA. Furthermore, ε-CL and LLA copolymers could be chemically recycled back to monomer utilizing Sn(Oct)2. While this work lays the foundation for EtVP-based copolymers, investigation into triblocks and other end-of-life options may further improve the potential ap-plications of these CO2-based (co)polymers.
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    R code and data supporting: Cattle exclusion increases encounters of wild herbivores in Neotropical forests
    (2024-05-30) Vélez, Juliana; McShea, William; Pukazhenthi, Budhan; Rodríguez, Juan D; Suárez, María F; Torres, José M; Barrera, César; Fieberg, John;; Vélez, Juliana; Fieberg Lab
    This repository contains R code and data supporting: Cattle exclusion increases encounters of wild herbivores in Neotropical forests. This study implements a BACI experimental sampling design to quantify the effect of cattle exclusion on encounter probability of the native community of browsers and fruit consumers, and percent ground cover in multifunctional landscapes of the Colombian Orinoquía. Wildlife-permeable fences were built along forest edges in four forest patches (i.e., blocks) containing control and fenced (treatment) sites. We installed 33 camera traps to obtain information about wildlife and cattle encounter probabilities, before and after the fences were constructed. We fit Bayesian generalized linear mixed effects models to quantify the effect of fences via the interaction between the time period (before and after the fences were built) and treatment (control or fenced sites).
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    Supporting Data for Luminescent Solar Concentrator Greenhouses for Concurrent Energy Generation and Lettuce Production in the United States
    (2024-05-23) Loh, Kristine; Harbick, Kale; Eylands, Nathan; Kortshagen, Uwe; Ferry, Vivian;; Ferry, Vivian; University of Minnesota Department of Chemical Engineering and Materials Science
    Meeting the needs for both renewable energy production and increased food supply to sustain growing communities remains a global challenge. Agrivoltaic greenhouses can meet these dual needs in one plot of land, mitigating land competition. Luminescent solar concentrators (LSCs) benefit these systems by providing additional design flexibility for crop-specific spec-trum modification while allowing sufficient light transmission for crop growth. Silicon quantum dots (Si QDs) have received growing interest as a material candidate for LSC greenhouses as well. We present an investigation into the impact of Si QD film concentration on the energy demands of an LSC greenhouse in Phoenix, Arizona through a comprehensive modelling framework. We then expand upon one Si QD concentration and simulate LSC greenhouses in 48 locations across the United States. We demonstrate LSC greenhouses can supply their annual energy demands in warm climates, where greenhouse heating demands remain low. LSC greenhouses can also be as profitable as the conventional glass greenhouse if the crop yield remains comparable or if the greenhouse can benefit from net metering.
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    Experimental Study of Delta Erosion Due to Dam Removal [2007]
    (2024-05-23) Cantelli, Alessandro; Parker, Gary; Paola, Chris;; SAFL, SAFL; National Center for Earth-Surface Dynamics (NCED)
    Cantelli, A., Paola, C. and Parker, G., 2004, Experiments on upstream-migrating erosional narrowing and widening of an incisional channel caused by dam removal, Water Resources Research, 40, W03304, doi:10.1029/2003/WR002940 The present paper reports on a laboratory investigation of the erosion of a deltaic front induced by the removal of a dam. We built a laboratory model of a dam, and observed both the sedimentation in the reservoir due to the downstream propagation of a delta front and the erosion of the delta front during dam removal, including measurement of channel morphology and flow field. Based on an analysis of bank erosion two principal erosive trends were detected: during the initial stage of erosion the width of each section quickly decreased to a minimum value, after which the section widened. Undistorted Froude similitude is used to scale the results up to field dimensions.
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    Debris Flow Flume [2009]
    (2024-05-23) Hsu, Leslie;; Nguyen, Charles; National Center for Earth-Surface Dynamics (NCED)
    A 4-meter diameter, 80-cm wide rotating debris flow flume was constructed at the University of California Richmond Field Station for studying large-scale granular flow phenomena. This dataset covers the experiments conducted in 2007 and 2008, where the primary goal was to study rates and mechanisms of bedrock erosion by debris flows. The following data will be posted at the NCED Repository: (Please see the temporary folder for now: ) 1. Master list of experiments 2. Force plate data 3. Laser profile data 4. Erosion topography data 5. Videos 6. MATLAB scripts Last updated 2012/07/15 *** 1. 01-debrisflow_mastertable.xls lists the experiment number, unique ID (YYMMDD), description, effective diameter, and bulk flow velocity. 2. to be deposited 3. to be deposited 4. to be deposited 5a. Debris Flow Flume videos ,asf videos (can be played with the VLC player: labeled as YYMMDD-MMSS_start-MMSS_end. 5b. Granular Flow and Debris Flow Video Examples These are .wmv files of field and laboratory granular flows and debris flows. The purpose of these videos is to show the great range in behavior of granular and debris flow. Videos were taken at the Illgraben Torrent, (a debris flow channel in Switzerland), in the large rotating debris flow flume (Big Wheel) at the Richmond Field Station, University of California, Berkeley, and in the small rotating debris flow flume (Maytag) at the Richmond Field Station. 6. to be deposited For more information contact:
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    Eel River Quads [2007]
    (2024-05-23) Bode, Collin;; Bode, Collin; National Center for Earth-Surface Dynamics (NCED)
    A listing of Quads available from the USGS covering some or all of the Eel River basin, and location maps in jpg and pdf formats.
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    Stream Restoration Toolbox [2007]
    (2024-05-23) Marr, Jeff; Cantelli, Alessandro; McElroy, Brandon; Parker, Gary; Lauer, Wesley;; Nguyen, Charles; National Center for Earth-Surface Dynamics (NCED)
    The Stream Restoration Toolbox consists of current basic research cast into the form of tools that can be used by practitioners. The toolbox contains models, code, websites, and small applications that are useful for applied stream restoration Tools are free to download and use. The Toolbox is not limited to NCED but is open to all contributors. Tools are listed in alphabetical order. Tool title: Bank Stabilization Diagnosis Tool purpose: Determination as to whether or not bank stabilization should be a part of a river restoration scheme Primary tool author: J. Wesley Lauer File(s): BankStabilizationDiagnosisTool(ppt) Tool title: The Dam Remover: Mark I Tool purpose: Models the morphodynamics of the channel that incises reservoir sediments following dam removal. Primary tool author: Alessandro Cantelli File(s): DamRemoverMARK1(ppt) DamRemoverMARK1_front_view(mpg) DamRemoverMARK1_plan_view(mpg) Tool title: The Gravel River Bankfull Channel Estimator Tool purpose: This tool consists of a set of regression relations for predicting bankfull geometry of mobile-bed single-thread gravel bed streams in terms of bankfull discharge and bed surface median grain size. Primary tool author: Gary Parker File(s): BankfullChannelEstimator_v2(ppt) & GravelBankfullData(xls) Tool title: The Gravel River Bankfull Discharge Estimator Tool purpose: This tool consists of an equation to estimate bankfull discharge in an undisturbed (reference) reach of a single-thread, mobile-bed gravel-bed stream from measured channel characteristics. Primary tool author: Gary Parker File(s): BankfullDischargeEstimator_v2(ppt) & GravelBankfullData(xls) Tool title: Planform Statistics Tool purpose: Tools to assist in calculating planform statistics (width, curvature, channel migration rate). Primary tool author: J. Wesley Lauer File(s): PlanformStatisticsTools(ppt) Planform_statistics_tools_v91(mxd) Note - download to same directory Planform_statistics_tools_v91_2 Tool title: Sand Bed Calculator Tool purpose: Calculator to estimate bed geometry and bedload transport from sand bed surveys. Primary tool author: Brandon McElroy File(s): SandBedCalc(ppt) SandBedCalc(xls) Ebook: 1D Sediment Transport Morphodynamics with applications to: Rivers and Turbidity Currents Tool Purpose: This ebook is an amazing resource containing fundamental and applied lectures on rivers and turbidity currents as well as many other geomorphic processes. The main lectures are in PowerPoint. These lectures are linked to Excel files, most of which serve as graphical user interfaces for code in Visual Basic for Applications. Extended explanation is given in Word. Phenomena are illustrated with mpeg video clips. Author: Dr. Gary Parker, University of Illinois, Urbana Status: In development. Tool title: Spawning Habitat Integrated Rehabilitation Approach (SHIRA) Tool purpose: This website provides a comprehensive introduction to the issues and concepts surrounding spawning habitat rehabilitation on regulated rivers. The website includes description of the SHIRA framework, case studies, and reference list. Primary tool author: Professer Greg Pasternack, University of California-Davis Tool title: The Spawning Gravel Refresher Tool purpose: Allows design of controlled flood releases from dams combined with gravel feeding to restore over-coarsened and immobile former gravel spawning grounds. Primary tool author: Gary Parker Status: In development. Tool title: The Threshold Channel Calculator Tool purpose: Design of a threshold channel in an e.g., urban setting, for which the sediment supply has been cut off. Primary tool author: Peter Wilcock Status: In development.