Table 2 Area and volume (± error) of the sediment with the corresponding changes in percentages. The upper row indicates the values for 2020, and the lower row refers to 2022. The mean elevation is given with standard deviation (sd), and the maximum represents the 99.9% maximum elevation of the sediment surface elevation. All elevations are shown as standard elevation zero (NHN, vertical datum in Germany).

From: Sediment accumulation by coastal biogenic structures sustains intertidal flats facing sea level rise in the German Wadden sea

Study site

AOI

Area [m²]

(2020)

(2022)

Aerial changes [%]

Volume ± error [m³]

(2020)

(2022)

Volumetric changes [%]

Max. elevation

[m NHN]

(2020)

(2022)

Mean elevation [m NHN] ± sd [m]

(2020)

(2022)

Sediment

Within

KB

32,755

3%

5,894

± 1,171

12%

-0.31

-0.52

± 0.09

33,771

6,589

± 972

-0.27

-0.50

± 0.09

NOL

60,192

-1%

16,024

± 1,532

15%

-0.30

-0.50

± 0.10

59,778

18,450

± 2,256

-0.21

-0.47

± 0.11

NOS

8,662

39%

2,780

± 136

67%

-0.38

-0.50

± 0.06

12,002

4,650

± 464

-0.32

-0.42

± 0.06

Proximity

KB

13,377

11%

2,620

± 478

30%

0.00

-0.43

± 0.12

14,910

3,398

± 429

0.02

-0.39

± 0.14

NOL

13,356

6%

4,303

± 310

20%

-0.01

-0.38

± 0.17

14,204

5,151

± 536

0.01

-0.34

± 0.16

Specific sites

KB

8,636

0%

1,756

± 309

39%

-0.38

-0.57

± 0.06

8,637

2,437

± 249

-0.33

-0.50

± 0.07

NOL

16,485

5%

2,080

± 325

68%

0.01

-0.27

± 0.12

17,337

3,500

± 654

0.01

-0.27

± 0.12

NOL

30,392

0%

12,966

± 774

1%

-0.30

-0.68

± 0.13

30,535

13,110

± 1,153

-0.34

-0.62

± 0.13