Table 2.

Details of selected sediment depth (z) from f_0HV relations shown in Fig. 7

Reference	Region	a	b	R2	N	f0HV (Hz)	z (m)	Sediment type
Ibs-von Seht and Wohlenberg 1999	Western Lower Rhine, Germany	96	1.388	0.98	34	0.14–4.64	15–1600	Quaternary–Tertiary
Delgado et al. 2000	Segura River Valley, Spain	55.11	1.256	0.97	27	1.16–8.3	4.1–44.7	Holocene–Late Pleistocene
D’Amico et al. 2008	Florence, Italy	140	1.172	0.9	23	1.03–7.47	9–115	Quaternary–Pliocene
Gosar and Lenart 2010	Ljubljana Moor, Slovenia	105.53	1.25	0.58	53	0.8–9.0	5–168	Quaternary, lacustrine, and fluvial
Tun et al. 2016	Eskisehir Basin, Turkey	136	1.36	0.98	30	~ 0.3–11	~ 0–500	Quaternary–Tertiary (Vs < 800 m/s)
Motazedian et al. 2011	Ottawa, Canada	64.98	1.198	0.95	89	~ 0.6–6.0	~ 5–130	Soft glaciomarine sediments
Moon et al. 2019	Bukit Timah, Singapore	92.5	1.06	0.94	14	~ 2.0–9.0	10–45.5	Quaternary and sedimentary (Jurong) rocks