Table 1. Mean Divergence of Mantle Shear Tractions (in Pa s-1) Beneath All Hotspots Considereda


Lon	Lat	Name	Court.	Mont.	umlm ud	um ud	lm ud	umlm u	umlm d

42	12	Afar	1	pd	3.66	1.91	1.74	2.88	0.78
-45	22	AtlanticRidge	/	pd	0.35	0.44	-0.09	0.29	0.06
77	-37	Amsterdam/StPaul	/	/	0.20	0.31	-0.10	0.10	0.11
-14	-8	Ascension	3	d	-0.28	-0.27	-0.01	-0.09	-0.19
-28	38	Azores	3	d	-0.37	-0.28	-0.09	-0.51	0.14
-113	27	Baja/Guadalupe	3	/	0.96	0.08	0.88	0.20	0.76
165	-67	Balleny	3	/	3.30	2.28	1.02	2.96	0.34
-60	30	Bermuda	3	/	1.0	0.85	0.17	0.79	0.23
3	-54	Bouvet	3	pd	0.83	0.66	0.17	0.28	0.56
-136	54	Bowie/Kodiac	2	mm	1.31	0.89	0.42	1.12	0.19
9	-54	CameroonLine	3	/	0.01	-0.01	0.01	-0.11	0.12
-17	28	Canary	2	d	2.29	1.62	0.67	1.11	1.18
-24	15	CapeVerde	2	d	0.62	0.26	0.36	0.22	0.40
166	5	Caroline	1	/	1.67	1.03	0.64	1.04	0.64
80	-35	Christmas	/	/	0.85	0.03	0.83	0.48	0.37
95	-17	Cocos/Keeling	/	pd	0.70	0.62	0.08	0.34	0.36
44	-12	Comores	3	/	-0.48	-0.67	0.19	-0.40	-0.08
-140	-29	Cook/MacDon.	2	d	1.43	1.03	0.41	1.28	0.16
45	-46	Crozet/Pr.Ed.	3	d	0.60	0.00	0.60	0.42	0.18
24	13	Darfur	3	/	-0.04	-0.11	0.07	-0.03	-0.01
0	-42	Discovery	3	/	0.62	0.36	0.26	0.08	0.54
34	6	E.Africa	3	/	1.46	0.97	0.49	1.08	0.38
143	-38	E.Australia	3	mm	-0.31	-0.16	-0.15	-0.36	0.05
-109	-27	Easter	1	d	0.46	0.37	0.09	0.28	0.17
7	50	Eifel	3	um	-0.78	-0.39	-0.39	-0.18	-0.59
15	38	Etna	/	um	-1.26	-0.69	-0.56	-0.27	-0.99
167	-78	Erebus	/	/	0.41	0.30	0.10	0.20	0.19
-32	-4	Fernando	3	/	-0.08	0.15	-0.23	-0.38	0.31
-111	-39	Foundations.	/	/	0.28	0.09	0.18	0.15	0.12
-86	1	Galapagos	2	d	0.55	0.09	0.46	0.09	0.46
-10	-40	Gough	/	/	0.15	0.18	-0.03	-0.11	0.25
28	30	GreatMeteor	3	/	-0.30	-0.09	-0.22	-0.23	-0.07
-118	29	Guadalupe	/	/	-0.38	-0.50	0.12	-0.54	0.16
110	20	Hainan	/	mm	1.45	1.28	0.18	0.83	0.62
-155	20	Hawaii	1	pd	1.69	1.24	0.46	1.47	0.22
6	23	Hoggar	3	/	1.31	0.94	0.36	0.52	0.79
-20	64	Iceland	1	d	2.07	2.08	-0.01	1.75	0.32
-8	71	JanMayen	3	/	1.25	1.26	-0.01	0.97	0.28
-130	46	JuandeFuca/Cobb	2	mm	-0.93	-0.76	-0.18	-0.86	-0.08
-79	-34	JuanFernandez	2	mm	-0.44	-0.29	-0.15	-0.26	-0.20
63	-49	Kerguelen	2	d	0.97	0.33	0.64	0.51	0.46
159	-31	LordHowe	3	/	1.78	1.56	0.22	1.23	0.55
-138	-51	Louisville	1	pd	0.39	0.19	0.21	0.25	0.15
-17	33	Madeira	/	/	1.96	1.42	0.54	1.10	0.86
38	-47	Marion	3	/	0.56	-0.15	0.71	0.57	-0.01
-138	-8	Marquesas	2	/	-0.21	-0.47	0.26	-0.34	0.13
-154	-21	Marshall/Gilbert	/	/	-0.28	-0.72	0.45	-0.47	0.19
1	-52	Meteor	3	/	-0.38	0.06	-0.44	-0.46	0.08
28	-32	NewEngland	3	/	1.19	1.18	0.00	0.00	1.18
-130	-24	Pitcairn	2	/	0.09	-0.39	0.48	-0.08	0.17
-104	36	Raton	3	/	0.94	1.22	-0.28	0.89	0.06
56	-21	Reunion	1	pd	0.48	0.22	0.27	0.017	0.46
168	-77	RossSea	/	/	0.48	0.36	0.12	0.33	0.16
-170	-14	Samoa	1	d	0.79	0.76	0.03	0.90	-0.10
-80	-26	SanFelix	3	/	-0.45	-0.27	-0.18	-0.18	-0.27
56	-5	Seychelles	/	um	1.72	2.01	-0.28	1.55	0.17
0	-52	Shona	/	/	-0.91	0.17	-1.08	-0.83	-0.08
-111	19	Socorro	3	/	-0.08	0.09	-0.17	-0.10	0.02
-10	-17	StHelena	3	/	0.31	0.46	-0.15	-0.11	0.42
78	-39	StPaul	/	/	0.03	0.02	0.02	-0.06	0.10
-150	-18	Tahiti	2	d	0.12	-0.40	0.53	-0.11	0.23
157	-39	Tasmanid	2	/	0.27	0.54	-0.27	-0.06	0.33
17	21	Tibesti	3	/	0.07	0.04	0.03	-0.13	0.20
-29	-21	Trinidad	/	/	-0.06	-0.06	-0.00	-0.18	0.12
-12	-37	Tristan	1	/	0.23	0.23	0.04	-0.04	0.32
16	-32	Vema	3	/	-1.16	-1.61	0.46	0.29	-1.45
-111	44	Yellowstone	2	/	-0.64	-0.46	-0.18	-0.52	-0.12

aBold figures indicate hotspots whose deep origin is univocally inferred by Courtillot et al. [2003] (C1), Montelli et al. [2006] (M1), and herein compatible with a whole mantle flow (up- and down-wellings). Italic indicates hotspots whose deep mantle genesis is either inferred by Courtillot et al. [2003] or Montelli et al. [2006], and is similarly confirmed by our analysis. 1, 2, and 3 in column Court. refer to the three classes of Courtillot et al. [2003], and d, pd, mm and um in column Mont. refer to the inferred deep, potentially deep, mid mantle and upper mantle classes of Montelli et al. [2006], respectively. Results are given as the mean value of the divergence within a search radius of 100 km about the hotspot location.