Sea-level monitor

Fedor Baart

So genoem omdat die oppervlak plat en uitgestrek is en lig soos 'n spieël weerkaats (G.J. van Wyk)

Classification: Shoreline detection technique

Classification: Shoreline detection technique

Classification: Shoreline detection technique

Classification: Shoreline detection technique

Classification: Shoreline detection technique

Classification: Shoreline detection technique

NDWIn

o. o

f p

ixe

ls

Classification: Shoreline detection technique

NDWIn

o. o

f p

ixe

ls

Classification: Shoreline detection technique

NDWIn

o. o

f p

ixe

ls

landwater

Classification: Shoreline detection technique

water

land

NDWIn

o. o

f p

ixe

ls

landwater

Classification: Shoreline detection technique

shorelinewater

land

NDWIn

o. o

f p

ixe

ls

landwater

Bird (1985)Luijendijk (2018)

Accretion 10% 27%

Stable 20% 49%

Erosion (<−0.5 m/yr) 70% 24%

Minister Lely vs Jhr de Muralt(1918)

Do not live below sea level! (1918)

Minister van Aartsen vs Geuze

Stop living below sea level! (1959)

Minister Bakker vs Oele

Exponential sea-level rise (1969)

Sea-level monitor (1969)

NCEP Wind reanalysis

Globaal vs Nederland (1993-2017)

1890-2018: 18.5 cm/century

18cm/century before 1993, 23cm/century after

18cm/century, deceleration (-0.0002mm/yr^2)

Peilbouten

Delfzijlversus other

stations

Subsidence estimates

Minister MaijWeggen vs Zijlstra

Nourishments won’t last!

Keep measuring