Guadiana river delta bathymetry surveys from 1944 to 1992 (digitalization)
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下载链接：
https://zenodo.org/record/5517109
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资源简介：
Digitalization of Guadiana river delta bathymetry.
Data consists of vector points and lines (shapefile) with bathymetric values (z) as reference to Hydrographic Zero (Z.H.): 2 m bellow mean sea level, observed in Cascais tidal gauge, Portugal.
It also has *.csv files (zxy) of the point data.
Data was manually digitized from paper charts regarding the following surveys (month/year):
?/1944; may, june/1958; june/1967; may, june/1969; march, april/1973; april/1977; july/1982; april, may/1986; april/ 1988; july/august/ 1992.
Original map scale is 1:5000.
Digitalization o paper charts produced 0.67 m x 0.65 m cell size raster files.
All data is projected to ESPG: 3763 (ETRS89 / Portugal TM06).
Surveys were originally performed by Portuguese hydrographic authorities:
Brigada Hidrográfica 4; MOPTC - DSF - DCME
创建时间：
2021-09-20
