Table 1 Summary of advection-diffusion characteristics from tracer and float observations

From: Deep inflow transport and dispersion in the Gulf of St. Lawrence revealed by a tracer release experiment

 

u (cm s−1)

κh (m2 s−1)

Lateral Tracer Motion

Leg 1

0.53 ± 0.16

227 ± 91

 

Leg 2

0.50 ± 0.23

157 ± 67

 

uf (cm s−1)

κf (m2 s−1)

Lateral Float Motion

Injection

2.1 ± 0.3

480 ± 167*

 

Leg 1

1.7 ± 0.5

 
 

w (m yr−1)

κv (m2 s−1)

Vertical Tracer Motion

Leg 1

9.5 ± 5.0

(1.0 ± 0.3) × 10−5

 

Leg 2

6.5 ± 7.0

(0.7 ± 0.4) × 10−5

  1. Lateral and vertical tracer motion are presented with 95% confidence intervals assigned from a bootstrap analysis (±2σ) with 1000 random subsets; lateral float motion uncertainties are 68% confidence intervals (±σ) for uf and calculated for κf via a bootstrap analysis with 1000 random subsets. All tracer dispersion estimates are based on differences between the point of injection and the time of survey. Note that κf (marked with an asterisk) is a mean value derived from injection and Leg 1 float deployments.
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