The characteristics of geoelectric fields at Kakioka, Kanoya, and Memambetsu inferred from voltage measurements during 2000 to 2011

Earth, Planets and Space

Table 3 Details of the geoelectric voltage observations at Memambetsu from 1948 to the present

	Start date	Coordinate	Length (m)	Electrode
				Type	Size (m × m)	Number/site	Depth (m)
N-S line	1 January 1950	G	195	C	0.5 × 0.05	4	2.5
	1 January 1956	G	900	C	0.5 × 0.05	1 to 2	~3
	1 July 1961	G	400	C	0.3 × 0.03	2	~3
	1 January 1970	G	130	C	0.3 × 0.03	2	~3
	1 December 2001	G	300	Cu	0.6 × 0.36	1	~3
E-W line	1 January 1950	G	160	C	0.5 × 0.05	4	2.5
	1 January 1956	G	700	C	0.5 × 0.05	1 to 2	~3
	1 July 1961	G	350	C	0.3 × 0.03	2	~3
	1 January 1970	G	150	C	0.3 × 0.03	2	~3
	1 December 2001	G	300	Cu	0.6 × 0.36	1	~3