Table T2. Parameters for modeling ammonium profiles and modeling results, Sites 1230 and 1227.]

Table T2. Parameters for modeling ammonium profiles and modeling results, Sites 1230 and 1227.


	Site 1230	Site 1227
Specified parameters:
: average porosity	0.75	0.6–0.8
D_s: diffusivity (cm²/s)*	7.5 x 10^–6	5.35 x 10^–6 to 8.12 x 10^–6
w: accumulation rate (cm/s)	3.17 x 10^–10	6.34 x 10^–11
K: ammonium adsorption coefficient^†	1.3	1.3
Peclet number	3	54
: density of solid phase (g/cm³)	2.4	2.4
Fitted parameters:
: inverse of scale distance (m^–1)	0.0268 ± 0.0015	0.0667 ± 0.0046
A1: integration constant (µmol/cm³)	19.2	6.7
Calculated parameters:
N_org lost via decomposition (wt%)	0.98 ± 0.10	1.10 ± 0.15

Notes: * = corrected for tortuosity: D_m/{1 – [ln(por2)]}, where D_m = molecular diffusion at 5°C, 11.75 cm²/s (Boudreau, 1997; Li and Gregory, 1974). † = adsorption coefficient typical for coastal sediments (Berner, 1980). Peclet number = D_s x /[(1 + K) x w].