Porsmilin profiles

Beach profiling using RTK-GNSS (survey method GPS) represents one of the most convenient method for frequent resurveys. Since 2003, profile surveys have been (approx.) weekly for the first year, fortnightly between January 2004 and June 2005, and near-monthly thereafter, with occasional gaps in the data due to equipment misfunctioning and maintenance. Trimble 5700/5800 and Topcon Hiper V GPS systems were used for data acquisition.
 
Citation proposal
Bertin Stéphane Bertin Stéphane Bertin Stéphane (UMR 6538 LGO UMR 6538 LGO UMR 6538 LGO ) - Floc'h France Floc'h France Floc'h France (UMR 6538 LGO UMR 6538 LGO UMR 6538 LGO ) - Le Dantec Nicolas Le Dantec Nicolas Le Dantec Nicolas (UMR 6538 LGO UMR 6538 LGO UMR 6538 LGO ) - Jaud Marion Jaud Marion Jaud Marion (UMS 3113 UMS 3113 UMS 3113 ) - Cancouët Romain Cancouët Romain Cancouët Romain (UMR 6538 LGO UMR 6538 LGO UMR 6538 LGO ) - Franzetti Marcaurelio Franzetti Marcaurelio Franzetti Marcaurelio (UMR 6538 LGO UMR 6538 LGO UMR 6538 LGO ) - Cuq Véronique Cuq Véronique Cuq Véronique (UMR 6554 LETG UMR 6554 LETG UMR 6554 LETG ) - Prunier Christophe Prunier Christophe Prunier Christophe (UMR 6538 LGO UMR 6538 LGO UMR 6538 LGO ) - Ammann Jérôme Ammann Jérôme Ammann Jérôme (UMR 6538 LGO UMR 6538 LGO UMR 6538 LGO ) - Augereau Emmanuel Augereau Emmanuel Augereau Emmanuel (UMR 6538 LGO UMR 6538 LGO UMR 6538 LGO ) - Lamarche Stevenn Lamarche Stevenn Lamarche Stevenn (UMR 6538 LGO UMR 6538 LGO UMR 6538 LGO ) - Belleney Déborah Belleney Déborah Belleney Déborah (UMR 6554 LETG UMR 6554 LETG UMR 6554 LETG ) - Rouan Mathias Rouan Mathias Rouan Mathias (UMR 6554 LETG UMR 6554 LETG UMR 6554 LETG ) - David Laurence David Laurence David Laurence (UMR 6554 LETG UMR 6554 LETG UMR 6554 LETG ) - Deschamps Anne Deschamps Anne Deschamps Anne (UMR 6538 LGO UMR 6538 LGO UMR 6538 LGO ) - Delacourt Christophe Delacourt Christophe Delacourt Christophe (UMR 6538 LGO UMR 6538 LGO UMR 6538 LGO ) - Suanez Serge Suanez Serge Suanez Serge (UMR 6554 LETG UMR 6554 LETG UMR 6554 LETG ) (2021) . Porsmilin profiles. https://services.mspdata.eu:/geonetwork/srv/api/records/aca4e22e-eb10-45c5-9212-a78e8277a851

Simple

Date ( Publication )
2021-03-11
Identifier
https://portail.indigeo.fr/geonetwork/srv/metadata/aca4e22e-eb10-45c5-9212-a78e8277a851
Credit
UMR 6538 LGO - UMR 6554 LETG
Status
Completed

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Keywords ( Theme )
  • SNO DYNALIT , Beach profile , Digital Elevation Model , Coastal monitoring , Nearshore waves , Astronomical tides , Bathymetry , Orthoimage
Keywords ( Place )
  • Brittany , Finistere , Porsmilin
GEMET - INSPIRE themes, version 1.0 GEMET - INSPIRE themes, version 1.0 ( Theme )
  • Elevation , Orthoimagery
Access constraints
Other restrictions
Other constraints
Pas de restriction d'accès public Pas de restriction d'accès public No limitations to public access
Use limitation
Free use subject to mentioning the source (at least the name of the producer) and the date of its last update
Use constraints
Other restrictions
Other constraints
Supplier partner is not able to guarantee the accuracy, update, integrity, completeness of data and in particular that they are free of errors or inaccuracies, including location, identification or qualification. No warranty as to the fitness of the data for a particular purpose is made by the supplier partner. Users use the data under their full responsibility, without recourse against the supplier partner whose liability can be incurred due to damage resulting directly or indirectly from the use of this data. In particular, it is up to users to decide, on their own responsibility: the opportunity to use the data; File compatibility of their computer systems; adequacy of the data to their needs; that they have sufficient competence to use the data. The partner supplier is in no way responsible for external elements including data analysis tools, hardware, software, networks ... used to view and / or process data. The user ensures verify the timeliness of the information provided is compatible with the use of it.
Spatial representation type
Grid
Spatial representation type
Text, table
Distance
0.5  m
Metadata language
Français French
Character set
UTF8
Topic category
  • Geoscientific information
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Unique resource identifier
RGF93 / Lambert-93 + NGF-IGN69 height (EPSG:5698) RGF93 / Lambert-93 + NGF-IGN69 height (EPSG:5698) RGF93 / Lambert-93 + NGF-IGN69 height (EPSG:5698)
Distribution format
  • Text (1.0 )

    Specification

  • MATLAB (1.0 )

    Specification

OnLine resource
Porsmilin_profiles.zip  

Porsmilin profiles (2003-2019)

OnLine resource
SNO DYNALIT  

SNO DYNALIT

Hierarchy level
Dataset

Conformance result

Date ( Publication )
2010-12-08
Explanation
Article 7, paragraph 1, of Directive 2007/2 / EC corresponds to the technical procedures for interoperability: this is the regulation on interoperability: regulation n ° 1253/2013 of 21 October 2013 amending and supplementing Regulation n ° 1089/2010 of 23 November 2010
Pass
true
Statement
Profile surveys consists in measuring a central cross-shore profile line from the dune ridge down to the low-tide waterline using high-accuracy RTK-GNSS in rapid-static mode (10 s averaging at 10 Hz) using mobile GNSS units mounted on a pole equipped with a bubble level. The cross-shore spacing between survey points is adapted to the terrain morphology, ranging from near-continuous (i.e., approximately 0.1 m) where complex up to a few metres in linear and morphologically simple areas.
Description
To facilitate reuse of the data, profiles initially formatted as three-column x, y, z matrices were further processed to be expressed in terms of vertical elevation versus cross-shore distance from a common starting point (profile head) at a standard sampling rate of 0.5 m. This was done through linear interpolation onto the best-fit transect line determined by least-squares (y = 2.072 x + 6560.283, R2 = 0.99, n = 253). Profile head position is 132011.840 m East by 6833840.188 m North. Orientation of beach profiles is 205.763°, where 180° indicates South counted clockwise.
Rationale
Data processing
Description
Performed concurrently with profile surveys, measurement of survey marks enabled estimating georeferencing precision over the period 2003-2019. It shows precisions at one standard deviation of 0.012 m, 0.015 m and 0.035 m along x (east), y (north) and z (elevation) directions, respectively.
Rationale
Quality verification
Description
Profiles are provided as individual tabulation delimited text (.txt) files with two columns (chainage and elevation), with the following naming convention: yyyymmdd_Porsmilin_GPS_Dist_IGN69_0.5, where yyyymmdd is the survey date.
Rationale
Data naming and preparation

Metadata

File identifier
aca4e22e-eb10-45c5-9212-a78e8277a851   XML
Metadata language
Français French
Character set
UTF8
Parent identifier
74ecce0a-e650-4c41-9970-97e4602f1cd8
Hierarchy level
Dataset
Hierarchy level name
Parent
Date stamp
2021-09-30T14:59:38
Metadata standard name
ISO 19115
Metadata standard version
1.0

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Porsmilin profiles

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