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Inventory of Dutch datasets for extreme value analyses

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Inventory of Dutch datasets for extreme value analyses



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Inventory of Dutch datasets for extreme value analyses


Authors: Madelon Burgmeijer and Pieter van Gelder (TU Delft)

Version: Febr. 22, 2005



Data set 1: Storm surge levels



http://www.hydraulicengineering.tudelft.nl/public/gelder/paper56-data3.zip
Harl.asc, Delf.asc Held.asc Hoek.asc,Vlis.asc.

Data information

Variables: Peaks over treshold values of storm surge levels at 5 locations along the Dutch coast


Series length: winters from 1932 through 1985 during storm season October 1 through March 15.
English translation of the instruction at the beginning of the file:
* Name of place winters 1932 through 1985

* Daan S4-selection of wind setup (minimum 30 cm)

*Storm season october 1 through march 15

* consecutive date (YYYYMMDD), time (HHMM, in MET),

* high tide in cm +NAP, level corrected for 1985 in cm+NAP, wind set up in cm.

* with correction according to indication GWIA-88.236

* selection originally used by CWI

Metadata information

Geographic characteristics:




Survey location

NB

OL

Harlingen

53°10'14''

5°25'55''

Hoek van Holland

51°59'

4°07'

Den Helder

52°58'

4°46'

Delfzijl

53°19'54''

6°55'05''

Vlissingen

51°27'

3°35'

Owner of the data is State Institute of Coast and Sea-The Hague. The data are available via the website of dr.ir. P.H.A.J.M. van Gelder


Data set 2: wave climate parameters



http://www.hydraulicengineering.tudelft.nl/public/gelder/golfklimaat.zip

Data information

Variables: Hm0, H1/3,HTE3, Tm02, TH1/3, Th0, wind direction, wind speed, water level , surge


Series length:
The period over which the wave climate parameters are available is:
1 January 1979- 31 December 2001
At most of the locations, survey statistics are available from 1979 onwards. At the Euro platform and Scheur west, however, the statistics begin much later, as can be seen from the table below.


location

beginning date

ancillory sensor



beginning date

main sensor



K13a platform

18 jan 1979

21 mrt 1985

Schiermonnikoog

noord


24 nov 1979

13 apr 1989

Eierlandse Gat

13 sep 1979

17 apr 1989

IJmuiden munitie

stortplaats



12 jan 1979

1 apr 1989

Noordwijk

meetpost


1 jan 1979

20mrt1985

Euro platform

19 nov 1982

20mrt 1985

Lichteiland Goeree

-

1 jan 1979

Schouwenbank

-

1 jan 1979

Scheur west

1 jan 1985

1 jan1985

In compiling the measured sequences, those approved from the main sensor at each location are used. The disturbances in these sequences (failure, rejected) have been supplemented, where possible, with information from the ancillory sensor. For information that was still missing after that, estimations have been made using the control and validation programme WAVIS98. As wave direction is never registered by the ancillory sensors, many more data are missing from this parameter than from wave heights and wave periods.*

*Detailed information about the net measurement duration of the main sensor, the main sensor supplemented by the ancillory sensor and the estimates can be found at the website of "Wave climate": http://www.golfklimaat.nl/index.cfm?page=uitleg.periode
Extreme values:
In addition to wave climates, this website also pays some attention to extreme values for wave heights and wave periods. A statistical technique is presented, to estimate the distribution of these variables. See:
http://www.golfklimaat.nl/index.cfm?page=extremen
The following link provides the files (Hmo....mxm, Tmo2....mxm, Tpb....mxm) which include the peaks over treshold for a set of locations at the North Sea.
http://www.hydraulicengineering.tudelft.nl/public/gelder/paper56-data2.zip
Data information for these files:
Variables: Hmo, Tmo2 and Tpb(peak period)
Series lenth: 1979 through 1993
Owner of the data: State Institute of Coast and Sea- The Hague

Metadata information

Sensors:
The second table gives an overview of the range of wave-measuring instruments present at each location. Since the introduction of the wavec buoy, measurements have been carried out with two sensors at most of the locations. The table shows in chronological order, under the heading 'main sensor', which instrument functioned successively as the only sensor or as the main sensor, and, under the heading 'ancillory sensor', during which period two survey instruments were present at that location and the type of ancillory sensor. If there is more than one sensor, the buoy that measures the wave direction is always the main sensor. The ancillory sensor acts as a back-up in case the main sensor fails.




Survey Location

Main Sensor

Period

Ancillory Sensor

K13a platform

wave-rider/wavec/ dir. wave-rider

1985-present

waverider

Schiermonnikoog noord

wave-rider/wavec/ dir. wave-rider

-

-

Eierlandse Gat

wave-rider/wavec/ dir. wave-rider

-

-

IJmuiden munitie stortplaats

wave-rider/wavec/dir. wave-rider

1989-present

waverider

Noordwijk meetpost

step gauge/wavec/step gauge/radar

1985-1991

step gauge

Euro platform

step gauge/wavec/dir. wave-rider

1985-present

step gauge/radar

Lichteiland Goeree

step gauge/radar

-

-

Schouwenbank

wave-rider

-

-

Scheur west

wave-rider

1985-present

wave-rider (Deurloo)

Geographic characteristics of the sampling zone:




full name of station

survey network

x

y

NB

OL

m MSL

K13a platform

Noordzee

10.176

583.334

53º13'04"

3º13'13"

30

Schiermonnikoog noord

Noordzee

206.527

623.483

53º35'44"

6º10'00"

19

Eierlandse Gat

Noordzee

106.514

587.985

53º16'37"

4º39'42"

26

IJmuiden munitiestortplaats

Noordzee

64.779

507.673

52º33'00"

4º03'30"

21

Noordwijk meetpost

Noordzee

80.443

476.683

52º16'26"

4º17'46"

18

Euro platform

Noordzee

9.963

447.601

51º59'55"

3º16'35"

32

Lichteiland Goeree

Noordzee

36.779

438.793

51º55'33"

3º40'11"

21

Schouwenbank

ZEGE

11.244

419.519

51º44'48"

3º18'24"

20

Scheur west

ZEGE

-7.797

380.645

51º23'32"

3º02'57"

15



Owner of the data is the department of Public Works, Transport and Water Management (ministerie van verkeer en waterstaat). The data were downloaded and are available via the website of dr. ir. P.H.A.J.M. van Gelder. The file format is .kls, they can be opened with Wordpad.


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  • Data information
  • Metadata information
  • Data set 2: wave climate parameters

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