Geological Setting

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M 8.1 Solomon Islands Earthquake: April 1, 2007

Magnitude 8.1 - SOLOMON ISLANDS

2007 April 1 20:39:56 UTC

Earthquake Details

Magnitude	8.1
Date-Time	Sunday, April 1, 2007 at 20:39:56 (UTC)= Coordinated Universal Time Monday, April 2, 2007 at 7:39:56 AM = local time at epicenter
Location	8.481°S, 156.978°E
Depth	10 km (6.2 miles) set by location program
Region	SOLOMON ISLANDS
Distances	45 km (30 miles) SSE of Gizo, New Georgia Islands, Solomon Isl.205 km (125 miles) S of Chirovanga, Choiseul, Solomon Islands345 km (215 miles) WNW of HONIARA, Guadalcanal, Solomon Islands2145 km (1330 miles) NNE of BRISBANE, Queensland, Australia
Location Uncertainty	horizontal +/- 8.8 km (5.5 miles); depth fixed by location program
Parameters	Nst=156, Nph=156, Dmin=343 km, Rmss=1.19 sec, Gp= 32°,M-type=moment magnitude (Mw), Version=8
Source	USGS NEIC (WDCS-D)
Event ID	us2007aqbk

Earthquake Summary

The following is a revised REPEAT revised release by the United States Geological Survey, National Earthquake Information Center: An earthquake occurred about 40 km (25 miles) SSE of Gizo, New Georgia Islands, Solomon Islands or about 345 km (215 miles) WNW of HONIARA, Guadalcanal at 2:39 PM MDT, Apr 1, 2007 (Apr 02 at 7:39 AM local time in Solomon Islands). The magnitude and location may be revised when additional data and further analysis results are available. Detailed information about tsunami watches and warnings is available from the NOAA Tsunami Warning Centers at http://tsunami.gov.

At least 34 people killed, an undetermined number missing and several villages destroyed by the earthquake and tsunami. About 300 homes, schools and a hospital were destroyed at Sasamunga and about 500 houses were damaged at Gizo. Tsunami damage also occurred on Lefung and Taro. Felt at Honiara. The tsunami also caused damage on Rossel Island and Bougainville, Papua New Guinea.

Tectonic Summary

The Solomon Islands earthquake of April 1, 2007, occurred along the boundary of the Pacific plate with, respectively, the Australia, Woodlark, and Solomon Sea plates. The latter three plates converge to the east-northeast or northeast against the Pacific plate with velocities of 90-105 mm/y. Along much of the plate boundary between the Pacific plate and the Australia/Woodlark/Solomon Sea plates, relative plate-motion is accomplished principally by subduction of the Australia/Woodlark/Solomon Sea plates beneath the Pacific plate. The April 1 earthquake's location and focal mechanism are consistent with the earthquake having occurred as underthrusting of the Australia/Woodlark/Solomon Sea plate beneath the Pacific plate, as part of the broader northeast-directed subduction process.

The Solomon Islands arc as a whole experiences a very high level of earthquake activity, and many shocks of magnitude 7 and larger have been recorded since the early decades of the twentieth century. The April 1 earthquake, however, nucleated in a 250-long segment of the arc that had produced no shocks of magnitude 7 or larger since the early 20th century

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Astrological Setting (Tropical - Placidus)

RIYAL Sun April 1 2007 UT 20h39m56s Lat8s29 Lon156e59 SORT ALL

Planet	Longit.	Latitude	Declin.	Const.	H.D.	Period	Inclin.	O. Range
VS2	0Ge01	12n51	32n41	Per	36.4	246	14.8	36.4->42.1
MS4	0Cp05 r	14n18	9s09	Oph	47.4	272	17.7	36.1->47.8
Chariklo	0Sc30 r	25s06	34s54	Cen	13.3	63	23.4	13.1->18.6
Ceto	0Sc52 r	14n41	2n00	Vir	28.6	1034	22.3	17.9->186.
Hylonome	1Sa27 r	3n45	16s47	Lib	20.6	126	4.1	18.9->31.5
Teharonhi	1Pi31	1n06	9s54	Aqr	45.0	293	2.6	42.9->45.3
TD10	1Ge35	4s57	15n38	Tau	17.1	931	6.0	12.3->178.
Atlantis	1Le43	2s53	16n58	Cnc	2.9	3	2.7	1.5->3.0
Pallas	2Pi06	17n07	5n17	Peg	3.4	5	34.8	2.1->3.4
TC302	2Ta21	6n02	17n57	Ari	47.2	409	35.1	39.0->71.1
Moon	2Li26	1s29	2s20	Vir	1.0	0	5.2
BU48	3Vi15 r	5n28	15n24	Leo	30.4	192	14.3	20.6->46.0
KX14	3Sa32 r	0s17	21s09	Sco	39.5	244	0.4	37.4->40.7
GV9	3Sc43 r	14s09	26s01	Hya	39.1	274	21.9	38.8->45.6
OO67	3Ar46	12s52	10s18	Cet	20.9	12962	20.1	20.8->1082
Typhon	4Vi28 r	0n41	10n31	Leo	17.6	234	2.4	17.5->58.4
Deucalion	4Sc48 r	0n07	13s01	Vir	43.4	295	0.4	41.5->47.2
Ceres	5Ar23	7s45	4s58	Cet	3.0	5	10.6	2.5->3.0
Elatus	5Le32 r	3n41	22n27	Cnc	12.5	40	5.3	7.3->16.3
Lilith	5Cp39	0s24	23s43	Sgr	3.1	4	5.6	2.1->3.2
Thereus	5Ta49	4s17	9n25	Cet	10.8	35	20.4	8.5->12.7
Huya	6Sc17 r	11n38	2s37	Vir	28.9	251	15.5	28.5->51.0
Chaos	6Ge45	3n41	25n04	Tau	41.9	307	12.1	41.0->50.1
Pholus	7Sa08 r	21n08	0s38	Oph	21.1	92	24.7	8.7->32.1
MW12	8Sa22 r	19n35	2s20	Oph	48.1	312	21.5	39.6->52.3
XX143	8Le52 r	3n08	21n04	Cnc	26.0	76	6.8	9.6->26.2
XZ255	8Le57 r	2n11	20n07	Cnc	16.3	64	2.6	15.4->16.5
TO66	9Ar04	6n51	9n53	Psc	46.6	284	27.5	38.0->48.5
Flora	9Pi33	2s22	10s10	Aqr	2.0	3	5.9	1.9->2.5
BL41	9Li42 r	13s39	16s21	Crv	11.3	30	12.5	6.9->12.6
QB243	10Pi21	1n00	6s45	Aqr	22.6	208	6.8	15.2->54.9
Nessus	10Aq29	15s13	32s11	Mic	20.9	122	15.6	11.8->37.5
Crantor	10Sa57r	10n13	11s58	Oph	14.7	86	12.8	14.1->25.0
RZ215	11Pi01	0s45	8s08	Aqr	32.0	1037	25.5	30.9->173.
Sun	11Ar44	0n00	4n39	Psc	1.0	1	0.0
XR190	11Ge56	0s20	21n53	Tau	58.3	430	46.8	52.3->61.7
FP185	12Li20 r	7n46	2n17	Vir	34.4	3357	30.8	34.3->414.
FZ173	12Li30 r	2s18	7s04	Vir	32.6	807	12.7	32.4->140.
Pylenor	12Ge48	4s41	17n41	Tau	20.1	68	5.4	11.6->21.8
GQ21	13Sc02r	6n30	9s33	Lib	40.6	923	13.3	38.3->151.
Ixion	13Sa24r	0s23	22s48	Oph	42.1	250	19.6	30.1->49.3
EL61	13Li32 r	27n28	19n55	Com	51.2	285	28.2	35.0->51.5
Vesta	13Sa59	8n18	14s14	Oph	2.2	4	7.1	2.2->2.6
Radamantus	14Li03 r	0s54	6s22	Vir	39.5	245	12.7	33.2->45.1
PN34	14Pi10	10n54	3n50	Peg	15.0	173	16.6	13.3->48.8
Chiron	14Aq22	6n34	10s14	Aqr	14.6	51	6.9	8.5->18.9
VQ94	14Li50 r	51n21	40n45	Boo	7.3	2750	70.5	6.8->385.8
WL7	14Ta59	7n11	23n11	Ari	15.3	90	11.2	14.9->25.2
CF119	15Le01 r	4s34	11n58	Cnc	38.8	839	19.7	38.7->139.
Amycus	15Sc59r	14s04	30s02	Hya	15.8	127	13.3	15.2->35.3
Node	16Pi06 r	0n00	5s29	Aqr
Varuna	16Ca12	3n07	25n33	Gem	43.4	281	17.2	40.6->45.1
Uranus	16Pi12	0s44	6s08	Aqr	20.1	84	0.8
Vertex	16Vi18
Mercury	16Pi19	2s16	7s29	Aqr	0.5	0	7.0
TX300	16Ar29	20n24	25n11	And	41.2	284	25.9	37.8->48.5
PJ30	16Aq40	2n08	13s48	Aqr	43.9	1403	5.7	28.6->222.
SQ73	16Ta54	9n09	25n38	Ari	16.9	73	17.5	14.3->20.5
AW197	17Le14r	9s12	6n54	Cnc	46.8	325	24.4	41.0->53.5
OM67	17Pi24	8n05	2n28	Psc	41.7	980	23.4	39.2->158.
Quaoar	17Sa39r	7n27	15s27	Oph	43.3	288	8.0	42.0->45.2
GB32	17Li45 r	5n11	2s10	Vir	36.0	3190	14.2	35.3->398.
Venus	17Ta55	0n53	18n02	Ari	0.7	1	3.4
Apogee	18Li10	2s51	9s45	Vir
SB60	18Pi12	21n51	15n25	Peg	43.8	272	23.9	37.5->46.6
Saturn	18Le27r	1n19	16n34	Leo	9.2	29	2.5
Logos	18Vi48 r	1n46	6n04	Leo	42.1	305	2.9	39.9->50.7
Damocles	19Aq12	5n10	10s09	Aqr	21.5	41	61.8	1.6->22.1
Sedna	19Ta30	11s47	6n14	Cet	88.5	10664	11.9	76.1->892.
Cyllarus	19Ge34	6n17	29n17	Aur	22.3	133	12.7	16.2->35.9
Jupiter	19Sa45	0n44	22s19	Oph	5.3	12	1.3
RR43	20Ta18	16s50	1n34	Tau	38.4	283	28.6	37.2->49.0
AZ84	20Ca22r	8s45	13n14	Gem	45.6	247	13.6	32.3->46.5
QB1	20Ar24	0n46	8n41	Psc	41.0	290	2.2	40.9->46.8
QD112	20Ar36	4n52	12n33	Psc	15.2	83	14.5	7.9->30.1
RM43	20Ta46	16s15	2n14	Tau	35.2	851	28.8	35.1->144.
Eris	20Ar46	14s04	4s57	Cet	96.8	557	44.2	37.9->97.5
Asbolus	21Ar02	4n31	12n24	Psc	10.6	76	17.6	6.8->29.2
VR130	21Ta07	2s38	15n30	Ari	14.8	116	3.5	14.7->32.9
RZ214	21Ar09	4n47	12n41	Psc	42.5	777	20.5	36.6->132.
Neptune	21Aq17	0s14	14s38	Cap	30.0	165	1.8
PB112	21Pi31	1s35	4s49	Aqr	35.6	1116	15.4	35.3->179.
CR105	21Le43r	5n54	19n51	Leo	56.0	3265	22.8	44.2->396.
RL43	22Ar11	7s38	1n33	Cet	23.8	121	12.3	23.4->25.5
FY9	22Vi22 r	29n29	29n50	Com	52.0	308	29.0	38.4->52.8
TL66	22Ta35	6s45	11n53	Tau	35.3	753	24.0	35.0->130.
GZ32	23Li17 r	15n44	5n35	Vir	19.8	112	15.0	18.0->28.4
Pelion	23Pi33	6s22	8s25	Aqr	18.8	89	9.4	17.2->22.7
TY364	23Ar34	21s56	11s16	Cet	39.7	241	24.8	36.2->41.3
YQ179	23Ca57r	2n06	23n24	Gem	38.5	832	20.9	37.2->139.
XA255	24Le05r	9n01	21n59	Leo	10.8	164	12.7	9.3->50.6
RD215	24Ar06	2n50	11n59	Psc	40.6	1346	26.0	37.6->206.
CO104	24Vi07 r	0s05	2n16	Vir	21.3	119	3.1	20.6->27.7
SA278	24Ar38	9s11	1n00	Cet	41.5	874	16.3	33.0->149.
CO1	24Li39 r	17n59	7n12	Vir	11.0	96	19.7	10.9->30.9
Midheav	24Cp52	0n00	21s10	Sgr
CZ118	24Vi54 r	5s20	2s53	Leo	42.7	1267	27.7	37.6->196.
HB57	25Li07 r	1n56	7s56	Vir	38.1	2116	15.5	38.1->291.
OX3	25Aq28	2n18	10s52	Cap	23.7	183	2.6	17.6->46.9
Echeclus	25Li30 r	2n26	7s36	Vir	12.2	35	4.3	5.9->15.7
FZ53	25Sc48r	20n33	0n49	Ser	20.9	117	34.8	12.4->35.3
UR163	25Ar53	0n44	10n41	Psc	50.1	369	0.8	36.8->66.2
OP32	26Aq19	17n10	3n27	Peg	41.2	285	27.2	38.6->48.0
Mars	26Aq33	1s15	13s50	Cap	1.4	2	1.8
Hephaistos	26Pi36 r	1s29	2s42	Psc	0.4	3	11.8	0.4->4.0
Ascend	27Ar10	0n00	10n28	Psc
Orcus	27Le14r	18s10	4s41	Hya	47.8	246	20.6	30.6->48.0
Pluto	28Sa58r	6n59	16s27	Sgr	31.3	251	17.1	29.7->49.9
UX25	28Ar59	1s37	9n37	Psc	42.1	278	19.5	36.6->48.5
Okyrhoe	29Ca04	11s54	8n41	CMi	5.9	24	15.6	5.8->11.0
Bienor	29Pi11	7n12	6n17	Psc	18.2	67	20.7	13.2->19.8
CY118	29Vi36 r	8n04	7n33	Vir	34.6	874	25.6	34.6->148.
RN43	29Aq37	12n03	0s18	Aqr	40.7	268	19.3	40.6->42.5

Celsius 14 Cp 05 Kelvin 2 Pi 42 Richter 27 Sc 53

Cuvier 4 Vi 54 Milankovitch 29 Ar 00 Tazieff 15 Aq 15

Darwin 23 Vi 07 Mohorovicic 6 Ge 51 Vulcano 8 Pi 46

Flammario 23 Sa 18 Nephele 0 Pi 42 Wegener 24 Li 01

Flammeus 20 Ar 46 Pele 5 Pi 52 Werner 3 Vi 24

Humboldt 25 Aq 01 Plinius 2 Sc 34 Tsunemi 27 Ta 37

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Focused Minor Planets

AW197 = 17 Le 14 r

Saturn = 18 Le 27 r

Venus = 17 Ta 55 Square

Mercury = 16 Pi 19 Quincunx

Uranus = 16 Pi 12

Quaoar = 17 Sa 39 r Trine

GB32 = 17 Li 45 r Sextile

TX300 = 16 Ar 29 Semisextile

Varuna = 16 Ca12

Mercury = 16 Pi 19 Trine

Uranus = 16 Pi 12

GB32 = 17 Li 45 r Square

Quaoar = 17 Sa 39 r Quincunx

Vertex = 16 Vi 18 Sextile

Orcus = 27 Le 14 r

Pluto = 28 Sa 58 r Trine

Milankovitch = 29 Ar 00

Echeclus = 25 Li 30 r Sextile

Tsunemi = 27 Ta 37 Square

Hephaistos = 26 Pi 36 r Quincunx

Neptune = 21 Aq 17 Square

Flammario = 23 Sa 18 Quincunx

FY9 = 22 Vi 22 r Trine

PB112 = 21 Pi 31 Sextile

Venus = 17 Ta 55 Semisquare

KX14 = 3 Sa 32 r Trine

GV9 = 3 Sc 43 r Quincunx

Neptune = 21 Aq 17 Sextile

Jupiter = 19 Sa 45 Trine

RM43 = 20 Ta 46 Semisextile

Ixion = 13 Sa 24 r

Sun = 11 Ar 44 Trine

FP185 = 12 Li 20 r Sextile

Mars = 26 Aq 33 Sextile

Flammario = 23 Sa 18 Trine

Midheav = 24 Cp 52 Square

Teharonhiawako = 1 Pi 31

Moon = 2 Li 26 Quincunx

Hylonome = 1 Sa 27 r Square

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Astrological Setting (Sidereal - Fagan/Bradley)

RIYAL Sun April 1 2007 UT 20h39m56s Lat8s29 Lon156e59 SORT ALL

Planet	Longit.
Midheav	0Cp01
CZ118	0Vi04 r
HB57	0Li17 r
OX3	0Aq38
Echeclus	0Li39 r
FZ53	0Sc57 r
UR163	1Ar02
OP32	1Aq29
Mars	1Aq42
Hephaistos	1Pi46 r
Ascend	2Ar19
Orcus	2Le23 r
KF77	3Sc33 r
Pluto	4Sa07 r
UX25	4Ar09
Okyrhoe	4Ca14
Bienor	4Pi20
CY118	4Vi46 r
RN43	4Aq47
VS2	5Ta10
MS4	5Sa14 r
Chariklo	5Li40 r
Ceto	6Li02 r
Hylonome	6Sc37 r
Teharonhi	6Aq40
TD10	6Ta44
Atlantis	6Ca52
Pallas	7Aq15
TC302	7Ar31
Moon	7Vi36
BU48	8Le25 r
KX14	8Sc41 r
PA44	8Ar51
GV9	8Li53 r
OO67	8Pi55
Typhon	9Le37 r
Deucalion	9Li57 r
Ceres	10Pi32
Elatus	10Ca41r
DH5	10Vi48 r
Lilith	10Sa49
Thereus	10Ar58
Huya	11Li27 r
Chaos	11Ta54
Pholus	12Sc18r
MW12	13Sc31r
XX143	14Ca02r
XZ255	14Ca06r
TO66	14Pi13
Flora	14Aq43
BL41	14Vi51 r
QB243	15Aq30
Nessus	15Cp38
Crantor	16Sc07r
RZ215	16Aq11
Sun	16Pi54
XR190	17Ta06
FP185	17Vi29 r
FZ173	17Vi40 r
Pylenor	17Ta57
GQ21	18Li12 r
Ixion	18Sc34r
EL61	18Vi41 r
Vesta	19Sc09
Radamantus	19Vi12 r
PN34	19Aq20
Chiron	19Cp32
VQ94	19Vi59 r
WL7	20Ar08
CF119	20Ca10r
Amycus	21Li08 r
Node	21Aq15r
RP120	21Sc21r
Varuna	21Ge21
Uranus	21Aq22
GM137	21Cp22
Vertex	21Le27
Mercury	21Aq29
TX300	21Pi38
PJ30	21Cp49
AW197	22Ca23r
OM67	22Aq33
Quaoar	22Sc49r
GB32	22Vi55 r
Venus	23Ar05
Apogee	23Vi20
SB60	23Aq21
Saturn	23Ca36r
Logos	23Le57 r
Damocles	24Cp21
Sedna	24Ar40
Cyllarus	24Ta44
Jupiter	24Sc55
RR43	25Ar27
AZ84	25Ge32r
QB1	25Pi34
QD112	25Pi46
RM43	25Ar55
Eris	25Pi56
Asbolus	26Pi11
VR130	26Ar17
RZ214	26Pi19
Neptune	26Cp27
PB112	26Aq41
CR105	26Ca52r
RL43	27Pi20
FY9	27Le31 r
TL66	27Ar45
GZ32	28Vi26 r
Pelion	28Aq42
TY364	28Pi44
YQ179	29Ge06r
XA255	29Ca14r
RD215	29Pi15
CO104	29Le16 r
SA278	29Pi48
CO1	29Vi48 r

Celsius 19 Sa 14 Kelvin 7 Aq 52 Richter 3 Sc 03

Cuvier 10 Le 03 Milankovitch 4 Ar 09 Tazieff 20 Cp 24

Darwin 28 Le 17 Mohorovicic 12 Ta 01 Vulcano 13 Aq 55

Flammario 28 Sc 27 Nephele 5 Aq 51 Wegener 29 Vi 10

Flammeus 25 Pi 56 Pele 11 Aq 01 Werner 8 Le 24

Humboldt 0 Aq 11 Plinius 7 Li 44 Tsunemi 2 Ta 47

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Focused Minor Planets

AW197 = 22 Ca 23 r

Saturn = 23 Ca 36 r

Venus = 23 Ar 05 Square

Mercury = 21 Aq 29 Quincunx

Uranus = 21 Aq 22

Quaoar = 22 Sc 49 r Trine

GB32 = 22 Vi 55 r Sextile

TX300 = 21 Pi 38 Semisextile

Varuna = 21 Ge 21

Mercury = 21 Aq 29 Trine

Uranus = 21 Aq 22

GB32 = 22 Vi 55 r Square

Quaoar = 22 Sc 49 r Quincunx

Vertex = 21 Le 27 Sextile

Orcus = 2 Le 23 r

Pluto = 4 Sa 07 r Trine

Ascend = 2 Ar 19

Milankovitch = 4 Ar 09

Echeclus = 0 Li 39 r Sextile

Tsunemi = 2 Ta 47 Square

Hephaistos = 1 Pi 46 r Quincunx

Neptune = 26 Cp 27 Square

Flammario = 28 Sc 27 Quincunx

FY9 = 27 Le 31 r Trine

PB112 = 26 Aq 41 Sextile

Venus = 23 Ar 05 Semisquare

KX14 = 8 Sc 41 r Trine

GV9 = 8 Li 53 r Quincunx

Mars = 1 Aq 42 Sextile

Flammario = 28 Sc 27 Trine

Midheav = 0 Cp 01 Square

Teharonhiawako = 6 Aq 40

Moon = 7 Vi 36 Quincunx

Hylonome = 6 Sc 37 r Square

Astrocartography

YQ179 has the IC line going through Solomon Islands, very near the epicenter

SA278 is rising very near the epicenter

GZ32 is setting very near the epicenter

Echeclus is setting very near the epicenter

Composite map: the epicenter area is localized very well

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This offshore earthquake lifted the small Solomon island of Ranongga ten feet (three meters) out of the water, baring its surrounding coral reef.

See "Other Paradigms" for AW197: "Coral Reef Structures".

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