Table 3 Allocated elevation-, sample extraction- and sampling uncertainties (where these are missing from the original publication.

1. Elevation determination:

 Auto-level

not reported

not reported

0.03

cf. levelling uncertainty (Törnqvist et al.²²; Hijma et al.²⁹⁶)

 clinometer and analog depth recording

not reported

not reported

half modern tidal range

n/a

 digital depth gauge/ dive computer

not reported

not reported

0.5

Rovere et al.²⁹⁷; Azzopardi and Sayer²⁹⁸

 interpolation between contours on drainage plans

variable

variable

dependent on contour spacing

n/a

 interpolation from topographic maps; no contour spacing given

variable

variable

0.5

n/a

 levelling

1.5

0.01

0.03

Törnqvist et al.²²; Hijma et al.²⁹⁶

 levelling (laser)

0.15

0.15

0.03

Törnqvist et al.²²; Hijma et al.²⁹⁶

 ship—echosounder/not reported

not reported

not reported

half modern tidal range

n/a

 ‘spirit level and folding ruler’

not reported

not reported

0.5

n/a

 survey, not reported

n/a

n/a

0.5

n/a

 theodolite

not reported

not reported

0.03

cf. levelling uncertainty (Törnqvist et al.²²; Hijma et al.²⁹⁶)

 unknown or not reported

n/a

n/a

0.5

n/a

2. Coring method:

 Auger or hand auger

not reported

not reported

0.05

cf. hand coring (Hijma et al.²⁹⁶; Woodroffe²⁹⁹)

 horizontal push core

not reported

not reported

0.15

cf. vibracoring and rotary drilling (Hijma et al.²⁹⁶; Morton and White³⁰⁰)

 hydraulic drill or piston core

not reported

not reported

0.15

cf. vibracoring and rotary drilling (Hijma et al.²⁹⁶; Morton and White³⁰⁰)

 piston corer, Livingstone, split spoon or unspecified

not reported

not reported

0.15

cf. vibracoring and rotary drilling (Hijma et al.²⁹⁶; Morton and White³⁰⁰)

 Russian corer

not reported

not reported

0.01

Woodroffe²⁹⁹

 star picket driver

not reported

not reported

0.15

cf. vibracoring and rotary drilling (Hijma et al.²⁹⁶; Morton and White³⁰⁰)

 single tube sampler

not reported

not reported

0.15

cf. vibracoring and rotary drilling (Hijma et al.²⁹⁶; Morton and White³⁰⁰)

 percussion drilling

not reported

not reported

0.15

cf. vibracoring and rotary drilling (Hijma et al.²⁹⁶; Morton and White³⁰⁰)

 rotary drill

not reported

not reported

0.15

cf. vibracoring and rotary drilling (Hijma et al.²⁹⁶; Morton and White³⁰⁰)

 SCARID drilling system

Not reported

not reported

0.1

Dennis Hubbard (pers. comm)

 barge mounted drilling rig

not reported

not reported

0.15

cf. vibracoring and rotary drilling (Hijma et al.²⁹⁶; Morton and White³⁰⁰)

 virbracore

not reported

not reported

0.15

Hijma et al.²⁹⁶; Morton and White³⁰⁰

 gravity corer

not reported

not reported

0.15

cf. vibracoring and rotary drilling (Hijma et al.²⁹⁶; Morton and White³⁰⁰)

 ‘rigging’—unknown

not reported

not reported

0.15

cf. vibracoring and rotary drilling (Hijma et al.²⁹⁶; Morton and White1997³⁰⁰)

 drilling, unspecified

not reported

not reported

0.15

cf. vibracoring and rotary drilling (Hijma et al.²⁹⁶; Morton and White³⁰⁰)

 not reported

0.5

0.03

0.15

cf. vibracoring and rotary drilling (Hijma et al.²⁹⁶; Morton and White³⁰⁰)

 not reported, assumed hand coring

not reported

not reported

0.05

Hijma et al.²⁹⁶; Woodroffe²⁹⁹

 not reported, assumed vibracoring

not reported

not reported

0.15

Brown¹⁵⁴; Robbin²⁵⁹

3. Sampling:

 author specified

0.001

2

n/a

n/a

 cores

0.001

2

0.01

Shennan¹⁴

 exposure/outcrop

0.01

0.01

0.01

n/a

 unknown/not reported setting

0.25

0.25

0.01

n/a