Ground deformation source model at Kuchinoerabu-jima volcano during 2006–2014 as revealed by campaign GPS observation

Earth, Planets and Space

Table 1 Coordinates of GPS benchmarks at Kuchinoerabu-jima, relative displacements with respect to KUCG during January 2006–April 2014, and uncertainty of change in baseline length

Benchmark	Longitude (°E)	Latitude (°N)	Altitude (m asl)	Relative displacement with respect to KUCG (m)			Uncertainty of change in baseline length (m)
Benchmark	Longitude (°E)	Latitude (°N)	Altitude (m asl)	E–W	N–S	U–D	Uncertainty of change in baseline length (m)
KUCG	130.19674	30.46283	38.2	–	–	–	–
KUC1	130.20948	30.44666	381.4	− 0.045	0.010	0.021	0.028
KUC2	130.21702	30.45142	599.3	–	–	–	–
KUC3	130.21768	30.44677	575.2	0.052	0.016	0.034	0.035
KUC4	130.21777	30.44576	576.9	0.072	− 0.022	0.031	0.033
KUC5	130.21367	30.44667	555.3	− 0.144	0.066	0.123	0.024
KUC6	130.21644	30.44696	607.2	0.039	0.050	0.038	0.028
KUC7	130.20086	30.44142	165.9	− 0.013	− 0.007	− 0.042	0.017
KUC8	130.21713	30.43047	358.7	− 0.004	− 0.006	− 0.011	0.022
KUC9	130.23171	30.44069	183.3	0.006	− 0.008	− 0.023	0.020
KUC10	130.24001	30.44769	239.2	− 0.005	− 0.006	− 0.026	0.071
KUC11	130.23156	30.46102	230.8	0.009	− 0.006	− 0.016	0.020
KUC12	130.20010	30.47958	29.5	− 0.001	0.003	− 0.041	0.014
KUC13	130.16418	30.48463	86.9	–	–	–	–
KUC14	130.21499	30.44178	620.1	− 0.023	0.012	0.001	0.033
KUC15	130.21464	30.44484	552.4	− 0.124	− 0.110	0.112	0.036

The values of uncertainty of change in baseline length were set as the criteria of errors of horizontal displacements (ex _i, ey _i), and errors of vertical displacements (eh _i) were set to be three times of these values (i.e., eh _i = 3ex _i = 3ey _i) as described in the text