Direct comparison of site-specific and basin-scale denudation rate estimation by in situ cosmogenic nuclides: an example from the Abukuma Mountains, Japan

Progress in Earth and Planetary Science

Table 1 Site parameters and geometric properties of the drainage basins sampled for cosmogenic measurements

Site	¹⁰Be production rate (atoms/g/yr)			²⁶Al production rate (atoms/g/yr)			Latitude °N	Longitude °E	Altitude (m)	Mean basin altitude (m) ^c	Mean slope (deg)
	Spallation ^a	Slow muon ^b	Fast muon ^b	Spallation ^a	Slow muon ^b	Fast muon ^b
ABK101	6.90	0.016	0.045	46.64	1.1	0.093	37.384	140.824	620	-	-
ABK103	6.49	0.015	0.044	43.82	1.1	0.092	37.482	140.778	540	-	-
ABK-R1	7.07	0.016	0.045	47.77	1.1	0.094	37.431	140.754	463	649	13.9
ABK-R3	6.58	0.015	0.044	44.43	1.1	0.092	37.450	140.807	339	551	12.0

^aProduction rates by high-energy spallation are calculated following Stone (2000) for altitudinal and latitudinal scaling. This is the most commonly used scaling scheme in the existing literature. The scaling factor is a function of atmospheric pressure and geographic latitude; ^bproduction rates by slow and fast muons are calculated according to Braucher et al. (2011); ^cmean altitudes of the catchments are calculated by ArcGIS for production rates of fluvial sediments.