Table 1 Sampling data of each core and the main parameters derived from radionuclide analysis of all sediment cores (MAR: Mass Accumulation Rate; SAR: Sediment Accumulation Rate).
From: Bottom-trawling along submarine canyons impacts deep sedimentary regimes
Station | Sampling date | Location | Depth (m) | Supported 210Pb horizon (cm) | Surface excess 210Pb | Inventory | Accumulation Rates | ||
|---|---|---|---|---|---|---|---|---|---|
(Bq·kg−1) | (Bq·m−2) | Layers (cm) | MAR (g·cm−2·y−1) | SAR (cm·y−1) | |||||
Morràs 1 | 13/10/2013 | Canyon flank | 717 | 25 | 180 ± 20 | 19 600 ± 600 | 10–25 | 0.150 ± 0.011 | 0.207 ± 0.016 |
Morràs 2 | 13/10/2013 | Canyon flank | 727 | 10 | 55 ± 10 | 900 ± 100 | — | — | — |
Morràs 3 | 13/10/2015 | Canyon axis | 796 | 23 | 410 ± 20 | 21 800 ± 500 | 0–11 | 0.184 ± 0.009 | 0.322 ± 0.016 |
10–22 | 0.090 ± 0.005 | 0.128 ± 0.007 | |||||||
Morràs 4 | 13/10/2013 | Canyon axis | 987 | 26 | 350 ± 20 | 20 100 ± 500 | 3–25 | 0.129 ± 0.005 | 0.200 ± 0.007 |
Besòs 1 | 15/09/2014 | Canyon axis | 810 | >55 | 230 ± 10 | >54 000 | 4–25 | 0.63 ± 0.06 | 0.98 ± 0.08 |
28–41 | 0.61 ± 0.04 | 0.92 ± 0.06 | |||||||
40–54 | 0.28 ± 0.03 | 0.39 ± 0.04 | |||||||
Besòs 2 | 28/07/2012 | Canyon axis | 1238 | 28 | 430 ± 20 | 19 200 ± 200 | 0–12 | 0.110 ± 0.002 | 0.205 ± 0.005 |
15–28 | 0.118 ± 0.006 | 0.180 ± 0.009 | |||||||
Besòs 3 | 29/07/2012 | Canyon axis | 1487 | 16 | 470 ± 20 | 14 000 ± 200 | 4–16 | 0.057 ± 0.002 | 0.078 ± 0.003 |
Arenys 1 | 28/07/2012 | Canyon axis | 1074 | 20 | 390 ± 20 | 20 500 ± 400 | 2–14 | 0.176 ± 0.009 | 0.297 ± 0.015 |
13–20 | 0.061 ± 0.004 | 0.078 ± 0.005 | |||||||
Arenys 2 | 29/07/2012 | Canyon axis | 1410 | 16 | 600 ± 30 | 11 900 ± 200 | 0–16 | 0.066 ± 0.004 | 0.093 ± 0.006 |
Arenys 3 | 29/07/2012 | Canyon axis | 1632 | 15 | 630 ± 30 | 11 100 ± 300 | 0–14 | 0.061 ± 0.002 | 0.091 ± 0.003 |
