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NCCOS Assessment: Duke Marine Lab Sill monitoring data collected from 2004-10-12 to 2025-04-10 (NCEI Accession 0306220)

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This dataset contains long-term monitoring data collected at the Duke Marine Lab Sill as part of a larger effort to monitor local fringing marshes in Carteret County. The monitoring data is stored in one .xlsx, three .csv files, and two .tif files. The .xlsx contains vegetative community data. The three .csv files contain the SET, sediment, and feldspar data. The .tif files consist of ortho mosaic images, captured using a DJI Phantom 4 Pro and Mavic 3M drones, in 2019 and 2025. Routine vegetation surveys were conducted starting in 2008 to monitor change in the vegetative community composition and total cover at 30 fixed plots. Prior to the vegetation surveys, two surface elevation tables (SETs) were installed in 2004 and elevation changes over time were tracked with millimeter scale resolution. Sediment was also collected prior vegetation monitoring to determine the grain size distribution of placed sediment. Grain size was determined by sieving collected sediment through a series of sieves of decreasing mesh size. The grain sizes were split into 3 categories: gravel (>0.2mm), sand (0.063-2mm), and silt (<0.063mm). Percent organic matter was determined via loss on ignition (LOI). Additionally, to measure sediment deposition during hurricanes, feldspar plots were placed at high, mid and low elevations as the hurricanes were approaching (Dorian and Florence). Following the storm passage (within a week) deposition of sediment on top of feldspar was measured. More information on this site can be found here: https://arcg.is/1PufHu3
  • Cite as: Davis, Jenny; Currin, Carolyn; Puckett, Brandon; Greene, Michael; Walker, Quentin; LeClaire, Alyssa; Giannelli, Ryan (2025). NCCOS Assessment: Duke Marine Lab Sill monitoring data collected from 2004-10-12 to 2025-04-10 (NCEI Accession 0306220). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/0xhj-w904. Accessed [date].
gov.noaa.nodc:0306220
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Distributor NOAA National Centers for Environmental Information
+1-301-713-3277
ncei.info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Time Period 2004-10-01 to 2025-04-10
Spatial Bounding Box Coordinates
West: -76.67342
East: -76.673136
South: 34.716869
North: 34.717817
Spatial Coverage Map
General Documentation
Associated Resources
Publication Dates
  • publication: 2025-07-30
  • creation: 2025-07-15
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Historical archive - data has been stored in an offline storage facility
Data Update Frequency As needed
Purpose Collected monitoring data allows for the comparison of marsh established behind living shoreline structures to natural marshes.
Use Limitations
  • accessLevel: public
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Dataset Citation
  • Cite as: Davis, Jenny; Currin, Carolyn; Puckett, Brandon; Greene, Michael; Walker, Quentin; LeClaire, Alyssa; Giannelli, Ryan (2025). NCCOS Assessment: Duke Marine Lab Sill monitoring data collected from 2004-10-12 to 2025-04-10 (NCEI Accession 0306220). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/0xhj-w904. Accessed [date].
Cited Authors
Principal Investigators
Contributors
Resource Providers
Publishers
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
Global Change Master Directory (GCMD) Science Keywords Provider Keywords
  • % OM (organic matter)
  • % gravel
  • % sand
  • % silt
  • 2019 Orthoimagery
  • 2025 Orthoimagery
  • Acri
  • Average Pin Length
  • BM Arm offset (m)
  • BM elev (m NAVD88 G12B)
  • Bfru
  • Bhal
  • Code
  • Core
  • Correct to G12B
  • Correction
  • Cover Method
  • Cpal
  • Date
  • Days Elapsed
  • Dspi
  • Elev
  • Feature
  • Feldspar Depth (mm)
  • Feldspar Method
  • Feldspar Notes
  • Geoid
  • H1
  • H10
  • H2
  • H3
  • H4
  • H5
  • H6
  • H7
  • H8
  • H9
  • HMean
  • Hspp
  • Ifru
  • Installation Date
  • Jroe
  • Lcar
  • Malb
  • Marsh Type
  • MarshType
  • Mussel
  • NominalPlot
  • Notes
  • Pame
  • Pin #
  • Pin Height (m)
  • Plot
  • Plot position
  • Reading
  • Reading Date
  • SET reader
  • Salt
  • Site
  • Slin
  • Spat
  • Srob
  • Ssem
  • Sspp
  • Storm
  • Surface elevation (m NAVD 88 G12B)
  • Transect
  • Treatment
  • Vlut
  • deadStem_m2
  • deadStem_per_area
  • liveStem_m2
  • liveStem_per_area
  • other
  • oyster
  • oyster_cultch
  • oyster_live
  • rock
  • snail_area
  • snails_m2
  • snails_per_area
  • stem_Area
  • upland
  • wrack
Data Center keywords NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS Global Change Master Directory (GCMD) Data Center Keywords
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords Provider Instruments
  • DJI Mavic 3M
  • DJI Phantom 4 Pro
  • Surface Elevation Table
  • digital level
  • human
  • laser level
  • measuring tape
  • meter stick
  • not applicable
  • quadrat
  • qualitative observation
  • sediment corer
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords Provider Place Names
  • Beaufort, NC
  • Duke Marine Lab Sill
  • Pivers Island
Keywords NCEI ACCESSION NUMBER
Keywords Send2NCEI Submission Package ID
  • NUG8E2
Use Constraints
  • Cite as: Davis, Jenny; Currin, Carolyn; Puckett, Brandon; Greene, Michael; Walker, Quentin; LeClaire, Alyssa; Giannelli, Ryan (2025). NCCOS Assessment: Duke Marine Lab Sill monitoring data collected from 2004-10-12 to 2025-04-10 (NCEI Accession 0306220). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/0xhj-w904. Accessed [date].
Data License
Access Constraints
  • Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Fees
  • In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Lineage information for: dataset
Processing Steps
  • 2025-07-30T17:58:03Z - NCEI Accession 0306220 v1.1 was published.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Parameter or Variable: 2019 Orthoimagery (measured); Units: pixels; Observation Category: in situ; Sampling Instrument: DJI Phantom 4 Pro; Sampling and Analyzing Method: A DJI Phantom 4 Pro was flown at 24m altitude at a flight speed of 2 m/s covering an area of ~1.2 acres. Ground sampling distance for the drone imagery was calculated to be 6mm/pixel resolution. 103 images were taken with 75% overlap/sidelap and used to create an RGB orthomosaic of the fieldsite.; Data Quality Method: Ground control points.
  • Parameter or Variable: 2025 Orthoimagery (measured); Units: pixels; Observation Category: in situ; Sampling Instrument: DJI Mavic 3M; Sampling and Analyzing Method: A DJI Phantom 4 Pro was flown at 24m altitude at a flight speed of 2 m/s covering an area of ~1.67 acres. Ground sampling distance for the drone imagery was calculated to be 6.7mm/pixel resolution. 137 images were taken with 75% overlap/sidelap and used to create an RGB orthomosaic of the fieldsite. 5 ground control points were placed throughout the site and used to create a digital elevation model.; Data Quality Method: Ground control points.
  • Parameter or Variable: Date (measured); Units: mm/dd/yyyy; Observation Category: in situ; Sampling Instrument: not applicable; Sampling and Analyzing Method: The date when the data were collected
  • Parameter or Variable: Site (measured); Units: not applicable; Observation Category: in situ; Sampling Instrument: not applicable; Sampling and Analyzing Method: The abbreviated name of the site where the data were collected= Pivers Island (PI)
  • Parameter or Variable: Treatment (measured); Units: not applicable; Observation Category: in situ; Sampling Instrument: not applicable; Sampling and Analyzing Method: Description of marsh treatment type, Natural or Sill
  • Parameter or Variable: MarshType (measured); Units: not applicable; Observation Category: in situ; Sampling Instrument: not applicable; Sampling and Analyzing Method: The type of marsh (based on marsh width)
  • Parameter or Variable: Feature (measured); Units: not applicable; Observation Category: in situ; Sampling Instrument: not applicable; Sampling and Analyzing Method: Additional features of the site and/or placement of the vegetation transects.
  • Parameter or Variable: Transect (measured); Units: #; Observation Category: in situ; Sampling Instrument: measuring tape; Sampling and Analyzing Method: The number used to identify each transect at each site. Transects run perpendicular to the shoreline. The start of the transect was located at the lower edge of Spartina alterniflora at the time of transect establishment.
  • Parameter or Variable: Plot (measured); Units: meters; Observation Category: in situ; Sampling Instrument: measuring tape; Sampling and Analyzing Method: Measured distance in meters of plot from shoreward end of transect. Plots are surveyed at standard distances from the shoreline along the transect. In meters, these distances are -1, 0, 5, 10, 15, 20, and then at 10 meter increments until the end of the transect. Occasionally, the actual plot surveyed is not at these targeted distances. These discrepancies may arise from adjusting the plot due to disturbance, from variations in the laying of the transect tape, or from reestablishment of the transect markers being slightly off the correct distance. The targeted distance that the plot should be is stored in the 'NominalPlot' column
  • Parameter or Variable: NominalPlot (measured); Units: meters per second; Observation Category: in situ; Sampling Instrument: measuring tape; Sampling and Analyzing Method: Targeted distance in meters of plot from shoreward end of transect. Plots are surveyed at standard distances from the shoreline along the transect. In meters, these distances are -1, 0, 5, 10, 15, 20, and then at 10 meter increments until the end of the transect. Occasionally, the actual plot surveyed is not at these targeted distances. These discrepancies may arise from adjusting the plot due to distrubance, from variations in the laying of the transect tape, or from reestablishment of the transect markers being slightly off the correct distance. The actual distance that the plot was measured from the shoreward marker is stored in the 'Plot' column.
  • Parameter or Variable: Cover Method (measured); Units: not applicable; Observation Category: in situ; Sampling Instrument: not applicable; Sampling and Analyzing Method: Which cover classes were used to estimate percent cover: 2008 - 2019 CVS (Carolina Vegetation Survey, Peet et al. ) was used, 2020 - BB (Braun-Blanquet, Kenworthy 1993) was used
  • Parameter or Variable: Acri (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Atriplex cristata, seabeach orache or other Atriplex species CVS percent cover category
  • Parameter or Variable: Bfru (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Borrichia frutescens, sea ox-eye CVS percent cover category
  • Parameter or Variable: Bhal (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Baccharis halimifolia, groundsel bush/cotton bush CVS percent cover category
  • Parameter or Variable: Cpal (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Cynanchum palustre, Milkweed vine CVS percent cover category
  • Parameter or Variable: Dspi (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Distichlis spicata, salt grass CVS percent cover category
  • Parameter or Variable: Hspp (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Hydrocotyle sp., pennywort CVS percent cover category
  • Parameter or Variable: Ifru (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Iva frutescens, high-tide bush or bigleaf marsh-elder CVS percent cover category
  • Parameter or Variable: Jroe (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Juncus roemerianus, black needlerush CVS percent cover category
  • Parameter or Variable: Lcar (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Limonium carolinium, sea lavendar CVS percent cover category
  • Parameter or Variable: Malb (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Melilotus alba, white sweetclover CVS percent cover category
  • Parameter or Variable: Pame (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Phytolacca americana, pokeweed CVS percent cover category
  • Parameter or Variable: Sspp (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Salicornia spp. (europaea and virginica), pickleweed CVS percent cover category
  • Parameter or Variable: Salt (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Spartina alterniflora, smooth cordgrass CVS percent cover category
  • Parameter or Variable: Slin (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Suaeda linearis, annual seablight CVS percent cover category
  • Parameter or Variable: Spat (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Spartina patens, salt meadow cordgrass CVS percent cover category
  • Parameter or Variable: Srob (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Scirpus robustus, Salt marsh bullrush CVS percent cover category
  • Parameter or Variable: Ssem (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Solidago sempervirens, seaside goldenrod CVS percent cover category
  • Parameter or Variable: Vlut (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Vigna Luteola, hairy cowpod pea CVS percent cover category
  • Parameter or Variable: macroalgae (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Macroalgae species CVS percent cover category (species name sometime indicated in notes)
  • Parameter or Variable: Mussel (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Mussel CVS percent cover category. This category is a catch-all for various mussel species like Guekensia demissa (horse mussel), Brachidontes exustus (scorched mussel), Brachidontes recurvus (hooked mussel) and other species
  • Parameter or Variable: other (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Other species CVS percent cover category. These are species not common enough for its own column - name indicated in notes (this was called unknown in the NERRS database). If more than one uncommon species is found values are seperated with a comma or placed into upland.
  • Parameter or Variable: upland (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Upland/terrestrial species CVS percent cover category. Upland species are those that are not typical of salt marshes - this differentiates less common species from those from a different habitat. This category may not have been used consistently through the years.
  • Parameter or Variable: oyster (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Oyster CVS percent cover category. This category does not differentiate between live and dead oyster because this was used early in sampling, before introduction of live and cultch categories.
  • Parameter or Variable: oyster_cultch (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Dead oysters/oyster shell/other shells CVS percent cover category
  • Parameter or Variable: oyster_live (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Living oysters CVS percent cover category
  • Parameter or Variable: rock (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Rock CVS percent cover category, including sill structure and large rubble
  • Parameter or Variable: wrack (measured); Units: percentage; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Wrack CVS percent cover category. Wrack is dead vegetation that originated outside of plot and carried by water into plot
  • Parameter or Variable: DEBRIS (measured); Units: abampere; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Trash and other rubish CVS percent cover category
  • Parameter or Variable: snails_per_area (measured); Units: snails; Observation Category: in situ; Sampling Instrument: quadrat; Sampling and Analyzing Method: The total number of snails (Littoraria irrorata) found within a specified area (see field Snails_Area).
  • Parameter or Variable: snail_area (measured); Units: meters squared; Observation Category: in situ; Sampling Instrument: quadrat; Sampling and Analyzing Method: The size of plot area (m2) in which snails are measured. The NOAA vegetation survey protocol calls for this area to be the full m2 plot unless more than 25 snails are in a subplot of 0.25 m2
  • Parameter or Variable: snails_m2 (measured); Units: meters squared; Observation Category: in situ; Sampling Instrument: quadrat; Sampling and Analyzing Method: An estimate of live Littorina littorea (common periwinkle) snails per meter squared in this plot. Not an estimate if Snails_Area = 1m2. Calculated by dividing snails_per_area by snail_Area
  • Parameter or Variable: liveStem_per_area (measured); Units: meters squared; Observation Category: in situ; Sampling Instrument: quadrat; Sampling and Analyzing Method: Number of live S. alterniflora stems counted in a subplot of the whole plot.
  • Parameter or Variable: deadStem_per_area (measured); Units: meters squared; Observation Category: in situ; Sampling Instrument: quadrat; Sampling and Analyzing Method: Number of standing dead S. alterniflora stems counted in a subplot of the whole plot.
  • Parameter or Variable: stem_Area (measured); Units: meters squared; Observation Category: in situ; Sampling Instrument: quadrat; Sampling and Analyzing Method: The size of a subplot (in m2) in which S. alterniflora stems were counted.
  • Parameter or Variable: liveStem_m2 (calculated); Units: meters squared; Observation Category: in situ; Sampling Instrument: quadrat; Sampling and Analyzing Method: An estimate of live S. alterniflora stems per meter squared in this plot
  • Parameter or Variable: deadStem_m2 (calculated); Units: meters squared; Observation Category: in situ; Sampling Instrument: quadrat; Sampling and Analyzing Method: An estimate of standing dead S. alterniflora stems per meter squared in this plot
  • Parameter or Variable: H1 (measured); Units: cm; Observation Category: in situ; Sampling Instrument: meter stick; Sampling and Analyzing Method: Height is the length from the soil to the tip of the green of the tallest leaf. The number following H represents the number of the sequential stem (1-10) measured. Selection of the plants detailed in methods
  • Parameter or Variable: H2 (measured); Units: cm; Observation Category: in situ; Sampling Instrument: meter stick; Sampling and Analyzing Method: Height is the length from the soil to the tip of the green of the tallest leaf. The number following H represents the number of the sequential stem (1-10) measured. Selection of the plants detailed in methods
  • Parameter or Variable: H3 (measured); Units: cm; Observation Category: in situ; Sampling Instrument: meter stick; Sampling and Analyzing Method: Height is the length from the soil to the tip of the green of the tallest leaf. The number following H represents the number of the sequential stem (1-10) measured. Selection of the plants detailed in methods
  • Parameter or Variable: H4 (measured); Units: cm; Observation Category: in situ; Sampling Instrument: meter stick; Sampling and Analyzing Method: Height is the length from the soil to the tip of the green of the tallest leaf. The number following H represents the number of the sequential stem (1-10) measured. Selection of the plants detailed in methods
  • Parameter or Variable: H5 (measured); Units: cm; Observation Category: in situ; Sampling Instrument: meter stick; Sampling and Analyzing Method: Height is the length from the soil to the tip of the green of the tallest leaf. The number following H represents the number of the sequential stem (1-10) measured. Selection of the plants detailed in methods
  • Parameter or Variable: H6 (measured); Units: cm; Observation Category: in situ; Sampling Instrument: meter stick; Sampling and Analyzing Method: Height is the length from the soil to the tip of the green of the tallest leaf. The number following H represents the number of the sequential stem (1-10) measured. Selection of the plants detailed in methods
  • Parameter or Variable: H7 (measured); Units: cm; Observation Category: in situ; Sampling Instrument: meter stick; Sampling and Analyzing Method: Height is the length from the soil to the tip of the green of the tallest leaf. The number following H represents the number of the sequential stem (1-10) measured. Selection of the plants detailed in methods
  • Parameter or Variable: H8 (measured); Units: cm; Observation Category: in situ; Sampling Instrument: meter stick; Sampling and Analyzing Method: Height is the length from the soil to the tip of the green of the tallest leaf. The number following H represents the number of the sequential stem (1-10) measured. Selection of the plants detailed in methods
  • Parameter or Variable: H9 (measured); Units: cm; Observation Category: in situ; Sampling Instrument: meter stick; Sampling and Analyzing Method: Height is the length from the soil to the tip of the green of the tallest leaf. The number following H represents the number of the sequential stem (1-10) measured. Selection of the plants detailed in methods
  • Parameter or Variable: H10 (measured); Units: cm; Observation Category: in situ; Sampling Instrument: meter stick; Sampling and Analyzing Method: Height is the length from the soil to the tip of the green of the tallest leaf. The number following H represents the number of the sequential stem (1-10) measured. Selection of the plants detailed in methods
  • Parameter or Variable: HMean (calculated); Units: cm; Observation Category: in situ; Sampling Instrument: not applicable; Sampling and Analyzing Method: The mean height (cm) of the measured S. alterniflora stems.
  • Parameter or Variable: Notes (measured); Units: not applicable; Observation Category: in situ; Sampling Instrument: human; Sampling and Analyzing Method: Notes from the field or about the management of this entry
  • Parameter or Variable: BM elev (m NAVD88 G12B) (measured); Units: m NAVD88; Observation Category: in situ; Sampling Instrument: laser level; Sampling and Analyzing Method: Elevation of the brass marker on the SET in m NAVD 88 G12B
  • Parameter or Variable: Pin # (measured); Units: #; Observation Category: in situ; Sampling Instrument: Surface Elevation Table; Sampling and Analyzing Method: The pin number printed on the pin arm and written on each pin.
  • Parameter or Variable: Pin Height (m) (measured); Units: meter; Observation Category: in situ; Sampling Instrument: Surface Elevation Table; Sampling and Analyzing Method: The height of the pin above the pin arm in meters.
  • Parameter or Variable: Average Pin Length (measured); Units: meter; Observation Category: in situ; Sampling Instrument: Surface Elevation Table; Sampling and Analyzing Method: The length of the pin in meters.
  • Parameter or Variable: BM Arm offset (m) (measured); Units: meter; Observation Category: in situ; Sampling Instrument: Surface Elevation Table; Sampling and Analyzing Method: Vertical distance in m between brass marker and top of SET arm. Updated 6/21/19, The average height of the arm surface above the brass marker as measured by laser leveling in 2014.
  • Parameter or Variable: Surface elevation (m NAVD 88 G12B) (measured); Units: m NAVD88; Observation Category: in situ; Sampling Instrument: Surface Elevation Table; Sampling and Analyzing Method: Calculated marsh surface elevation in m NAVD 88 G12B. Surface elevation of the marsh below the pin. The equation is: Orthometric Elevation of brass marker (m NAVD 88 G12B)+ 2014 average leveled arm height above brass marker (m)- Pin Length (m) +Pin Height (m) above arm.
  • Parameter or Variable: Code (measured); Units: not applicable; Observation Category: in situ; Sampling Instrument: not applicable; Sampling and Analyzing Method: Surface Anomaly Code for different materials or physical attributes of the surface where the pin has landed. A= algae, B=burrow, D= debris, F = Feldspar, H=hole, LO=live oyster, M=mussels, MD = Mound, O= oyster culch, P=plant, R=rock, RM = Root Mat, S=shell, T= animal tracks, Q=miscellaneous questionable readings, W=wrack. LO, O, and S anomalies may not have been recorded consistently. O may have been used for Oyster substrate including culch (shell) and live oyster.
  • Parameter or Variable: SET reader (measured); Units: not applicable; Observation Category: in situ; Sampling Instrument: not applicable; Sampling and Analyzing Method: Name of individual reading the SET. AH (also AKH)=Anna Hilting, AP=Abby Poray, CC (also CAC)=Carolyn Currin, DB = Danny Becker, MG=Mike Greene, LMW=Lexia Weaver, KF = Kelly Farrell KLD = Katie Dick (summer intern), JD - Jenny Davis, JH = Jack Hinton (summer intern), JW = John Wernly, LCB = Lisa Coward Barron, MG = Mike Greene, ML = Mike LaCroix, PD or PCD=Priscilla Delano, PM=Padma Maddi, QW = Quin Walker, RG = Rachel Gittman, SV=Sabrina Varnam, TM = Trish Murphey, VW or VWW=Valerie Winkelmann (Wunderly). B?, and BH are unknown
  • Parameter or Variable: Elev (measured); Units: m NAVD88; Observation Category: in situ; Sampling Instrument: digital level; Sampling and Analyzing Method: Elevation of the vegetation plot. Elevation measured with a digital level. Calculated in 'RC Shoreline Elevation Clacs' sheet or taken from previous versions of this master.
  • Parameter or Variable: Geoid (measured); Units: not applicable; Observation Category: in situ; Sampling Instrument: not applicable; Sampling and Analyzing Method: Geoid used for the elevation calculation. Geoids are used to find the elevation of benchmarks, so a change in Geoid can mean that the benchmark elevation will change. Elevation does not nessesarily change between Geoids or the change may not be on a scale that is within out ability to measure
  • Parameter or Variable: Correction (measured); Units: meter; Observation Category: laboratory analysis; Sampling Instrument: not applicable; Sampling and Analyzing Method: The correction factor that should be applied to old elevations to bring the old measurements into the current geoid. This column used an if statement to check if the Geoid was G03 and then lookup the appropriate correction in the 'geoid comparisons' tab. however the values were pasted into the columns after the lookup was complete
  • Parameter or Variable: Correct to G12B (measured); Units: m NAVD88; Observation Category: laboratory analysis; Sampling Instrument: not applicable; Sampling and Analyzing Method: Elevation when corrected (or left uncorrected) to Geoid 12b. This adds 'Elev (m NAVD88)' to 'Geoid Correction (m)'
  • Parameter or Variable: Installation Date (measured); Units: mm/dd/yyyy; Observation Category: in situ; Sampling Instrument: not applicable; Sampling and Analyzing Method: Date feldspar layer installed
  • Parameter or Variable: Reading Date (measured); Units: mm/dd/yyyy; Observation Category: in situ; Sampling Instrument: not applicable; Sampling and Analyzing Method: Date plot sampled and sediment depth over feldspar measured
  • Parameter or Variable: Days Elapsed (measured); Units: days; Observation Category: in situ; Sampling Instrument: not applicable; Sampling and Analyzing Method: Days between installation and reading
  • Parameter or Variable: Plot position (measured); Units: not applicable; Observation Category: in situ; Sampling Instrument: qualitative observation; Sampling and Analyzing Method: Relative position/elevation of marker horizon plot in marsh
  • Parameter or Variable: Marsh Type (measured); Units: not applicable; Observation Category: in situ; Sampling Instrument: not applicable; Sampling and Analyzing Method: Marsh treatment (Sill or Natural)
  • Parameter or Variable: Core (measured); Units: #; Observation Category: in situ; Sampling Instrument: sediment corer; Sampling and Analyzing Method: replicate core number
  • Parameter or Variable: Reading (measured); Units: not applicable; Observation Category: in situ; Sampling Instrument: not applicable; Sampling and Analyzing Method: Number of readings done on the core collected
  • Parameter or Variable: Feldspar Depth (mm) (measured); Units: millimeter; Observation Category: in situ; Sampling Instrument: calipers; Sampling and Analyzing Method: distance from the feldspar layer to the surface of the sediment
  • Parameter or Variable: Feldspar Notes (measured); Units: not applicable; Observation Category: in situ; Sampling Instrument: not applicable; Sampling and Analyzing Method: how the sediment core was collected and other notes
  • Parameter or Variable: Feldspar Method (measured); Units: not applicable; Observation Category: in situ; Sampling Instrument: not applicable; Sampling and Analyzing Method: The technique used to identify or measure the feldspar marker horizon: LN2 (Liquid Nitrogen), peat core, knife core, glass syringe core, or core tube.
  • Parameter or Variable: Storm (measured); Units: not applicable; Observation Category: in situ; Sampling Instrument: not applicable; Sampling and Analyzing Method: Name of storm that occurred between install and reading date
  • Parameter or Variable: % OM (organic matter) (measured); Units: percentage; Observation Category: laboratory analysis; Sampling Instrument: sediment sieve; Sampling and Analyzing Method: Samples taken along vegetation transects from top 2 cm of sediment. Rinsed according to wet sieving protocol through 2mm and 63 um sieves (sieved into 3 categories: gravel ( >0.2mm), sand (0.063-2mm), and silt (<0.063mm)) then dried overnight at 100 deg. C. Organic matter samples ashed at 475 deg. C. for 6+ hours.
  • Parameter or Variable: % gravel (measured); Units: percentage; Observation Category: laboratory analysis; Sampling Instrument: sediment sieve; Sampling and Analyzing Method: Samples taken along vegetation transects from top 2 cm of sediment. Rinsed according to wet sieving protocol through 2mm and 63 um sieves (sieved into 3 categories: gravel ( >0.2mm), sand (0.063-2mm), and silt (<0.063mm)) then dried overnight at 100 deg. C. Organic matter samples ashed at 475 deg. C. for 6+ hours.
  • Parameter or Variable: % sand (measured); Units: percentage; Observation Category: laboratory analysis; Sampling Instrument: sediment sieve; Sampling and Analyzing Method: Samples taken along vegetation transects from top 2 cm of sediment. Rinsed according to wet sieving protocol through 2mm and 63 um sieves (sieved into 3 categories: gravel ( >0.2mm), sand (0.063-2mm), and silt (<0.063mm)) then dried overnight at 100 deg. C. Organic matter samples ashed at 475 deg. C. for 6+ hours.
  • Parameter or Variable: % silt (measured); Units: percentage; Observation Category: laboratory analysis; Sampling Instrument: sediment sieve; Sampling and Analyzing Method: Samples taken along vegetation transects from top 2 cm of sediment. Rinsed according to wet sieving protocol through 2mm and 63 um sieves (sieved into 3 categories: gravel ( >0.2mm), sand (0.063-2mm), and silt (<0.063mm)) then dried overnight at 100 deg. C. Organic matter samples ashed at 475 deg. C. for 6+ hours.
Acquisition Information (collection)
Instrument
  • calipers
  • camera
  • sediment sieve
Last Modified: 2026-06-08T13:19:57Z
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