Ingeokring excursie – Duin formatie – Bloemendaal aan Zee

In the frontal dune zone of Bloemendaal, a dune dynamization experiment is taking place for already some 10 years. The public water supply company PWN has undertaken a 1 :1 scale experiment to revitalize a sizeable part of their primary dune by making 7 cuts in the existing dune sea front to connect the beach with the dune system. The reason for revitalization is restoration of a more natural geomorphology, as the old seafront dunes had been overgrown with monoculture vegetation, aided by the nitrogen (NOx) deposition. The new sand deposits behind the cuts give a chance to the original species growing in the active dune environment.

In this area geological dune formational processes can also be witnessed in its most natural form. Under guidance of Bert van der Valk, retired geologist at Deltares, the Ingeokring will pay a visit to this dune site.  From PWN, their team leader ecology will be present, mr. Dick Groenendijk to bring the PWN experience to our group. During an afternoon field trip, we will be able to witness the erosional as well as depositonal dune environment. Hopefully there will be a strong wind blowing to see the aeolian processes taking place. Bert will explain the finer sedimentological details.  and nature specials of this experimental science nature area. Dick Groenendijk will explain about the preparation and impact of the project, that took 10 years of planning, as well as ecologically interesting issues from the PWN point of view.

For more information on the dune restoration project:


Everyone should bring along:

-Good walking shoes

-Rain clothes (depending on the weather that day)

-Lunch to be eaten while wallking


Provisional time schedule:


12:00 Assemble on the parking of Parnassia in Bloemendaal aan Zee, paid parking

Verzamelen op parkeerterrein Bloemendaal aan Zee/Parnassia (betaald parkeren)

12:15 Walking tot he test area in the dunes. Everybody brings their own lunch which we eat on the way.

Lopen naar het veldwerkterrein in de duinen – Lunch pakket mee, opeten tijdens de wandeling

12:45 Field excursion hosted and explanation by Bert van der Valk (Deltares) and Dick Groenendijk (PWN). Possibility to inevestigate and inquire.

Veld excursie en uitleg ter plaatse door Bert van der Valk (Deltares) en Dick Groenendijk (PWN), gelegenheid tot onderzoeken en vragen

14:45 Finaising the excursion in the field, walking back from the field to the starting point

afronding van de excursie in het veld en terugtocht van veld naar het beginpunt

15:30 Refreshements in the local beach bar.

Verfrissing in locale gelegenheid


Please subscribe for the excursion using the online form:, before October 5th  

Kind regards, and hoping to see you all on October 7th,

The board of Ingeokring


okt 07 2022


00:00 - 00:00
oktober 2024
Geen evenementen gevonden!