Date (Publication)

2021-03-11

Citation identifier

https://portail.indigeo.fr/geonetwork/srv/metadata/aca4e22e-eb10-45c5-9212-a78e8277a851

Credit

UMR 6538 LGO - UMR 6554 LETG

Status

Completed

Point of contact

Organisation name	Individual name	Electronic mail address	Role
UMR 6538 LGO	Bertin Stéphane	stephane.bertin@univ-brest.fr	Author
UMR 6538 LGO	Floc'h France	france.floch@univ-brest.fr	Author
UMR 6538 LGO	Le Dantec Nicolas	nicolas.ledantec@univ-brest.fr	Author
UMS 3113	Jaud Marion	marion.jaud@univ-brest.fr	Author
UMR 6538 LGO	Cancouët Romain	romain.cancouet@euro-argo.eu	Author
UMR 6538 LGO	Franzetti Marcaurelio	marcaurelio.franzetti@univ-brest.fr	Author
UMR 6554 LETG	Cuq Véronique	veronique.cuq@univ-brest.fr	Author
UMR 6538 LGO	Prunier Christophe	christophe.prunier@univ-brest.fr	Author
UMR 6538 LGO	Ammann Jérôme	jerome.amman@univ-brest.fr	Author
UMR 6538 LGO	Augereau Emmanuel	emmanuel.augereau@univ-brest.fr	Author
UMR 6538 LGO	Lamarche Stevenn	stevenn.lamarche@univ-brest.fr	Author
UMR 6554 LETG	Belleney Déborah	deborah.belleney@univ-brest.fr	Author
UMR 6554 LETG	Rouan Mathias	mathias.rouan@univ-brest.fr	Author
UMR 6554 LETG	David Laurence	laurence.david@univ-brest.fr	Author
UMR 6538 LGO	Deschamps Anne	contact@indigeo.fr	Author
UMR 6538 LGO	Delacourt Christophe	christophe.delacourt@univ-brest.fr	Author
UMR 6554 LETG	Suanez Serge	serge.suanez@univ-brest.fr	Author

Theme

• SNO DYNALIT

• Beach profile

• Digital Elevation Model

• Coastal monitoring

• Nearshore waves

• Astronomical tides

• Bathymetry

• Orthoimage

Place

• Brittany

• Finistere

• Porsmilin

GEMET - INSPIRE themes, version 1.0

• Elevation

• Orthoimagery

Access constraints

Other restrictions

Other constraints

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

Language

Français

Character set

UTF8

Topic category

• Geoscientific information

Begin date

2003-01-08

End date

2019-11-28

Unique resource identifier

RGF93 / Lambert-93 + NGF-IGN69 height (EPSG:5698)

Distribution format

Name	Version
Text	1.0
MATLAB	1.0

OnLine resource

Protocol	Linkage	Name
WWW:DOWNLOAD-1.0-http--download	https://portail.indigeo.fr/geonetwork/srv/api/records/aca4e22e-eb10-45c5-9212-a78e8277a851/attachments/Porsmilin_profiles.zip	Porsmilin_profiles.zip

OnLine resource

Protocol	Linkage	Name
WWW:LINK-1.0-http--link	https://www.dynalit.fr/	SNO DYNALIT

Hierarchy level

Dataset

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

Character set

UTF8

Parent identifier

74ecce0a-e650-4c41-9970-97e4602f1cd8

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

Metadata author

Organisation name	Individual name	Electronic mail address	Role
UMR 6538 LGO	Bertin Stéphane	stephane.bertin@univ-brest.fr	Point of contact

Other language

Language	Character encoding
English	UTF8
French	UTF8