Electrical conductivity of old oceanic mantle in the northwestern Pacific I: 1-D profiles suggesting differences in thermal structure not predictable from a plate cooling model

Baba, Kiyoshi; Tada, Noriko; Matsuno, Tetsuo; Liang, Pengfei; Li, Ruibai; Zhang, Luolei; Shimizu, Hisayoshi; Abe, Natsue; Hirano, Naoto; Ichiki, Masahiro; Utada, Hisashi

doi:10.1186/s40623-017-0697-0

Earth, Planets and Space

Table 1 Information on the OBEM and EFOS sites and data used in this study

From: Electrical conductivity of old oceanic mantle in the northwestern Pacific I: 1-D profiles suggesting differences in thermal structure not predictable from a plate cooling model

Site ID	Instrument	Institute	Observation phase	Latitude	Longitude	Depth (m)	Sampling interval (s)	Available period/remarks
NM01	OBEM	ERI	Pilot	39°12.01′N	154°47.09′E	5756	60	20/06/2010–07/03/2012
		ERI	2nd	39°11.93′N	154°45.88′E	5751	60	05/09/2012–22/08/2013
		ERI	3rd	39°11.79′N	154°45.67′E	5751	10, 60^a	31/08/2013–06/09/2014
		ERI	Average	39°11.91′N	154°46.21′E	5754
	EFOS	ERI	2nd	39°12.02′N	154°45.91′E	5748	1	10/09/2012–13/09/2014^b E-dipole: 1.8 km, N113°E
NM02	OBEM	ERI	Pilot	39°42.09′N	153°21.17′E	5734	60	25/06/2010–26/02/2012
NM02	OBEM	JAMSTEC	2nd	39°42.68′N	153°21.21′E	5730	60	Unavailable^c
NM03	OBEM	ERI	Pilot	38°45.84′N	155°54.73′E	5765	60	Unavailable^d
		ERI	2nd	38°45.03′N	155°54.06′E	5757	10, 60^a	Unavailable^d
		ERI	4th	38°45.58′N	155°55.15′E	5763	10, 60^a	24/09/2014–13/09/2015
	EFOS	ERI	Pilot	38°45.81′N	155°54.69′E	5766	1	Unavailable^e
	EFOS	ERI	2nd	38°45.81′N	155°54.69′E	5766	1	Unavailable^e E-dipole: 3.3 km, N111°E
NM04	OBEM	ERI	Pilot	38°12.67′N	154°11.40′E	5946	60	20/06/2010–26/11/2011
NM04	OBEM	ERI	1st	38°12.78′N	154°12.21′E	5956	10, 60^a	Unavailable^d
NM05	OBEM	ERI	Pilot	40°15.00′N	155°24.40′E	5615	60	25/06/2010–26/02/2012
		ERI	2nd	40°15.22′N	155°24.78′E	5619	10, 60^a	21/08/2012–24/08/2013
		ERI	Average	40°15.11′N	155°24.59′E	5621	10, 60^a	21/08/2012–24/08/2013
NM06	OBEM	ERI	3rd	39°29.62′N	155°42.82′E	5599	10, 60^a	Unavailable^d
NM07	OBEM	ERI	3rd	41°07.73′N	156°01.15′E	5632	10, 60^a	31/08/2013–04/06/2014
NM08	OBEM	ERI	3rd	40°32.67′N	156°19.35′E	5546	10, 60^a	31/08/2013–03/06/2014
NM09	OBEM	ERI	3rd	39°47.35′N	156°34.84′E	5547	10, 60^a	31/08/2013–02/06/2014
NM10	OBEM	ERI	3rd	39°03.19′N	156°58.83′E	5734	10, 60^a	31/08/2013–02/06/2014
NM11	OBEM	ERI	3rd	38°15.05′N	157°17.31′E	5704	10, 60^a	31/08/2013–02/06/2014
NM12	OBEM	JAMSTEC	2nd	40°49.04′N	157°06.58′E	5511	60	30/08/2012–26/08/2013
NM13	OBEM	ERI	3rd	40°01.51′N	157°28.38′E	5535	10, 60^a	31/08/2013–06/06/2014
NM14	OBEM	JAMSTEC	2nd	39°02.44′N	158°00.76′E	5512	10, 60^a	Unavailable^e
	OBEM	ERI	3rd	39°02.48′N	158°00.12′E	5510	10, 60^a	31/08/2013–15/09/2014
	EFOS	ERI	2nd	39°02.64′N	158°00.61′E	5509	1	06/09/2012–18/09/2014^b E-dipole: 2.0 km, N107°E
NM15	OBEM	JAMSTEC	2nd	40°21.17′N	158°24.51′E	5578	60	28/08/2012–27/08/2013
NM16	OBEM	ERI	2nd	41°01.33′N	159°11.19′E	5577	10, 60^a	27/08/2012–27/07/2014
NM16	EFOS	ERI	2nd	41°01.27′N	159°11.20′E	5578	1	04/09/2012–17/09/2014 E-dipole: 1.9 km, N103°E
NM17	OBEM	JAMSTEC	3rd	39°46.15′N	159°51.75′E	5541	60	01/09/2013–06/06/2014
NM18	OBEM	ERI	1st	30°10.96′N	161°17.44′E	5983	60	01/12/2011–18/01/2013
NM19	OBEM	ERI	1st	29°09.09′N	161°46.51′E	5930	60	01/12/2011–02/09/2013
NM20	OBEM	JAMSTEC	1st	30°38.50′N	162°32.72′E	5970	60	01/12/2011–01/09/2013
NM20	OBEM	ERI	3rd	30°38.58′N	162°33.67′E	5968	60	Unavailable^e
NM21	OBEM	ERI	1st	29°32.51′N	162°51.55′E	5986	60	Unavailable^d
NM22	OBEM	JAMSTEC	1st	32°56.94′N	163°48.85′E	6188	60	01/12/2011–30/08/2013
NM23	OBEM	JAMSTEC	1st	31°55.52′N	164°24.57′E	6073	60	01/12/2011–31/08/2013
NM24	OBEM	ERI	1st	33°13.24′N	165°15.65′E	6118	60	01/12/2011–27/08/2013^b
		ERI	3rd	33°13.29′N	165°15.42′E	6122	10, 60^a	10/09/2013–17/09/2014
		ERI	Average	33°13.26′N	165°15.54′E	6121
NM25	OBEM	ERI	1st	32°19.47′N	165°26.31′E	6109	60	01/12/2011–20/03/2013

For EFOS data, the position is that of the recorder, and the dipole length and direction from the recorder are noted in remarks. The positions given in italicized characters are the representative positions for each site. Water depths at each site were retrieved from the up-to-date compilation of available MBES data, and the values for some sites are therefore slightly different from those previously reported by Baba et al. (2010, 2013a)
^aSampling intervals were changed during observation (see text for details)
^bIncludes unavailable sections
^cFailed to retrieve data
^dFailed to retrieve the instrument
^eNoisy

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