CF-1.6
Unidata Dataset Discovery v1.0
trajectory
Trajectory
CF-1.6
drifter data megapex 2014
drifter data as measured during the megapex 2014 field campaign at the Sand Motor, Netherlands.
GPS-tracked drifters
drifter
GT31 gps
North Sea
drifters_flood_30_09_2014
tudelft.nl
2014-09-30T06:58:30Z
2014-09-30T08:58:00Z
1 second
52.058056666666666
52.06543
degrees_north
1.6666666482478831E-6
4.186191666666667
4.207106666666666
degrees_east
1.6666666660114515E-6
Delft University of Technology
Max Radermacher
http://www.naturecoast.nl/
m.radermacher@tudelft.nl
STW NatureCoast
preliminary
STW NatureCoast
Wilmar Zeelenberg
Performing drifter deployments
2017-01-22T15:34:45Z
2017-01-22T15:34:45Z
2017-01-22T15:34:45Z
Max Radermacher
m.radermacher@tudelft.nl
http://www.naturecoast.nl/
Data collected on 30-Sep-2014. Processed with script process_drifterlog.m on 22-Jan-2017. Netcdf file created 2017-01-22T15:34:45Z.
DISCLAIMER: This data is made available in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
0
Unique identifier for each feature instance
trajectory_id
epoch time
time
seconds since 1970-01-01 00:00:00 0:00
julian
T
latitude
latitude
degrees_north
Y
52.058056666666666
52.06543
longitude
longitude
degrees_east
X
4.186191666666667
4.207106666666666
x RD
projection_x_coordinate
m
X
72635.5271192229
74081.1894265557
y RD
projection_y_coordinate
m
Y
452875.35059961095
453672.8199929106
velocity magnitude
None
m s^-1
1.0
0.0
0.0
2.7985777812915478
time y x
crs
GT31 GPS logger
velocity direction
direction_of_sea_water_velocity
degree
1.0
0.0
-180.0
180.0
time y x
crs
Determined from displacements in x and y. Direction at t = n is determined from offset between x(n) and x(n+1). Last entry is set to nan.
u velocity
sea_water_x_velocity
m s^-1
1.0
0.0
-1.3682352364707777
1.8897199725879046
time y x
crs
Determined from velocity magnitude and velocity direction.
v velocity
sea_water_y_velocity
m s^-1
1.0
0.0
-2.298763531508496
1.918966135432397
time y x
crs
Determined from velocity magnitude and velocity direction.
drifter number
None
None
1.0
0.0
1.0
15.0
time y x
crs
oblique_stereographic
EPSG:28992
6377397.155
6356078.96282
299.1528128
52.0922178
5.23155
0.9999079
155000.0
463000.0
+proj=sterea +lat_0=52.15616055555555 +lon_0=5.38763888888889 +k=0.999908 +x_0=155000 +y_0=463000 +ellps=bessel +units=m +towgs84=565.4174,50.3319,465.5542,-0.398957388243134,0.343987817378283,-1.87740163998045,4.0725 +no_defs