Table 1 Field data in Cubits Gap sub-delta

From: Competing effects of vegetation density on sedimentation in deltaic marshes

 

H (m)

U (cm/s)

Vc (%)

LAI (m2/m2)

nl (leaves/m2)

S

qd (g/m2/day)

April 24

0.4

13

5

0.05

16

0.00013

14

June 3

0.6

3

66

1.02

340

0.00008

190

July 1

0.6

6

20

0.21

70

0.00007

324

  1. Velocity, U, from drone images of tracer motion, and vegetation coverage, Vc, measured on dates shown in the table. Leaf area index, LAI (one-sided leaf area per bed area) estimated from Vc using method described in ref. 63 (See Methods). The leaves per bed area, nl = LAI ⁄Al), with Al the one-sided area of one leaf. The water surface slope, S, was not measured in the field study, but was estimated from Eq. (M4) and the measured velocity, using ndH = \({{\mbox{LAI}}}\). Sedimentation rate, qd, for each date was estimated from net deposition recorded on tiles just before and just after the vegetation and velocity measurement dates (see Fig. 41b mudflat site in Beltrán-Burgos19). The grain size in the field was between 12 and 53 µm, and in the model the size was set to 50 μm.
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