Site name	Code	Geographic Lat.	Geographic Lon.	Associ. Inst.	Operation period
Huancayo	HUA	-12.06	-75.20	IGP	97/07-
Kiritimati	KTM	2.05	-157.50	NASDA	97/08-
Ponape	PON	7.00	158.33	PATS	97/03-
Changchun	CHC	43.90	125.30	China Seismological Buleau	98/07-
Tonga	TNG	-21.10	-175.10	MLSNR , Tonga	99/09-
Marcus	MRQ	24.18	153.58	JMA	00/09-
Muntinlupa	MNT	14.40	121.0	NAMRIA	00/12-
Majuro	MJR	7.10	171.20	Island ECo.	01/03-
Kanchanaburi	TLD	14.00	98.50	Mahidol University	02/03-

Voltage Difference Measurement Network by Ocean Bottom Cables

cable	recording site	electrode(1)	electrode(2)	power supply	observ. period
Guam-Ninomiya	Guam	13.6N, 144.9E	35.3N, 139.3E	yes	91/12-
Guam-Philippines	Guam	13.6N, 144.9E	15.8N, 121.6E	no	93/09-
Guam-Midway	Guam	13.6N, 144.9E	28.2N, 177.4E	no	95/03-
Guam-Okinawa	Okinawa	26.1N, 127.8E	13.84N, 143.86E	yes	96/03-
Naoetsu-Nakhodka	Nakhodka	42.8N, 132.8E	37.67N, 137.98E	no	96/04-
Okinawa-Ninomiya	Okinawa	26.1N, 127.8E	35.3N, 139.3E	presently no	97/02-
Amakusa-Shanghai	Amakusa	32.5N, 130.1E	30.2N, 128.2E	presently no	98/11-