15/07/2009 Mag 7.8MwPublic ID:3124785 |
GCMT MTS
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Global Displacement Wavefields Graph
Understanding Global Displacement Wavefields Graphs
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This Fiordland earthquake caused power outages in several parts of the South Island and only minor damage. Reported damage includes a broken water main at Winton, cracks in exterior walls of buildings at Invercargill and items falling from shelves throughout the Southland region. Measurements indicate a geographic shift to the west towards Australia of 30.5 cm of the southern tip of the South Island.
Over the past two decades, several large earthquakes have occurred in Fiordland, predominantly in a cluster to the northeast of today’s earthquake. Though the faulting mechanisms of those events are similar to the 15th July earthquake, their slip vectors are rotated clockwise with respect to plate motions, and thus may not represent exactly the same style of faulting.
The most recent of these previous large events occurred on August 21st 2003 when a magnitude 7.2 Mw earthquake approximately 100 km to the northwest caused minor damage in Otago and Southland, and numerous landslides across the Fiordland region. A magnitude 6.7 event on August 10, 1993 caused power outages in the Te Anau area and was felt throughout South Island and as far away as Sydney, Australia. A magnitude 6.1 earthquake struck on May 31, 1989 and was felt strongly in the southwestern part of South Island and a magnitude 6.7 quake struck on 3rd June 1988 near Charles Sound.
Tsunami
A tsunami resulting from the earthquake was observed and recorded in several ways: by the observations of the occupants of boats present in thesounds near the epicentre, by an Australian deep-ocean buoy in the Tasman Sea, and on tide gauges throughout the Pacific. In addition a post-eventsurvey uncovered evidence of the environmental impact of the tsunami on specific locations within the sounds. At Jackson Bay the maximum amplitude
was 500 mm (peak-to-trough 1m). Interestingly, the largest wave here was almost two hours after the initial arrival, a similar delay in the maximum wave was observed in 2003 following an Mw7.2 Fiordland earthquake located just to the north of the most recent event.
7.8Mw location (geonet) |
Networks estimates of location |
aftershock maps
Data from the Geonet database are limited to the polygon area -45.3S,164.5E,-45.3S,168.15E,-48.0S,168.15E,-48.0S,164.5E. Some events may fall outside the borders of the map, especially to the SSW and the East, so you may need to zoom out to see these.
After the initial 1 hour map, the “ghost” or opaque icons shown on the maps are previous events to the time period shown at the top of the map, to show the cumulative pattern of the aftershocks which can be helpful in determining the extent of the Fault that failed.
aftershock maps 4 hour period
7.8 aftershocks map – (0-1hr)summarymag1= 0 , mag2= 0 , mag3= 0 mag4= 27 , mag5= 18 , mag6= 1, mag7= 1 total= 46 |
7.8 aftershocks map – (1-4hrs)summarymag1= 0 , mag2= 0 , mag3= 56 mag4= 61 , mag5= 5 , mag6= 0 total= 122 |
7.8 aftershocks map – (4-8hr)summarymag1= 0 , mag2= 3 , mag3= 84 total= 121 |
7.8 aftershocks map – (8-12hrs)summarymag1= 0 , mag2= 0 , mag3= 1 total= 6 |
7.8 aftershocks map – (12-16hr)summarymag1= 0 , mag2= 0 , mag3= 7 total= 20 |
7.8 aftershocks map – (16-20hrs)summarymag1= 0 , mag2= 0 , mag3= 1 total= 4 |
7.8 aftershocks map – (20-24hr)summarymag1= 0 , mag2= 1 , mag3= 10 total= 19 |
7.8 a/s map – (24hrs cumulative)summarymag1= 0 , mag2= 4 , mag3= 159 |
aftershock maps 12 hour period
7.8 aftershocks map – (24-36hrs)summarymag1= 0 , mag2= 1 , mag3= 3 |
7.8 aftershocks map – (36-48hrs)summarymag1= 1 , mag2= 70 , mag3= 109 |
7.8 aftershocks map – (48-60hrs)summarymag1= 0 , mag2= 3 , mag3= 84 |
7.8 aftershocks map – (60-72hrs)summarymag1= 0 , mag2= 0 , mag3= 1 |
72hr timeline graph
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aftershock maps 24 hour period
7.8 a/s map – 3-4 days (72-96hr)summarymag1= 0 , mag2= 54 , mag3= 64 |
7.8 a/s map – 4-5 days (96-120hrs)summarymag1= 2 , mag2= 77 , mag3= 48 |
7.8 a/s map – 5-6 days(120-144hrs)summarymag1= 0 , mag2= 52 , mag3= 39 |
7.8 a/s map – 6-7days (144-168hrs)summarymag1= 0 , mag2= 15 , mag3= 24 |
7 day (168hrs) timeline graph
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7.8 a/s map – 7-8 days (168-192hrs)summarymag1= 0 , mag2= 14 , mag3= 18 |
7.8 a/s map – 8-9days (192-216hrs)summarymag1= 0 , mag2= 11 , mag3= 19 |
7.8 a/s map – 9-10 days (216-240hrs)summarymag1= 0 , mag2= 21 , mag3= 16 |
7.8 a/s map – 10-11 days (240-264hrs)summarymag1= 0 , mag2= 14 , mag3= 13 |
7.8 a/s map – 11-12 days (264-288hrs)summarymag1= 0 , mag2= 34 , mag3= 8 |
7.8 a/s map – 12-13 days (288-312hrs)summarymag1= 0 , mag2= 9 , mag3= 16 |
7.8 a/s map – 13-14 days (312-336hrs)summarymag1= 0 , mag2= 10 , mag3= 13 |
7.8 a/s map – 0-14days (0-336hrs)summarymag1= 3 , mag2= 443 , mag3= 644 |
14 day (336hrs) timeline graph
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aftershock maps 7 day period
a/s map – 2-3 weeks (336-504hrs)summarymag1= 0 , mag2= 65 , mag3= 70 |
a/s map – 3-4 weeks (504-672hrs)summarymag1= 0 , mag2= 62 , mag3= 45 |
Very Strong [2]: Mabel Bush [2]
Strong [515]: Bluff [14], Dunedin [55], Edendale [3], Frankton [24], Glengarry [19], Glenorchy [6], Gore [64], Halfmoon Bay [3], Hawea Flat [6], Hedgehope, Kingston [2], Manapouri [3], Merrivale [2], Newfield [14], Orepuki, Otatara [28], Otautau [21], Pourakino Valley, Queenstown [98], Riverton/Aparima [20], Roslyn [19], Scotts Gap, Taramoa [2], Te Anau [51], Tuatapere [11], Waikiwi [23], Winton [23]
Rather Strong [874]: Alexandra [34], Appleby [13], Avenal [10], Balclutha [8], Bannockburn [5], Blackmount, Branxholme [2], Broad Bay [8], Brockville [10], Burnside [3], Caversham [14], Centre Bush, Clifton [10], Clyde [14], Cromwell [43], Deep Cove, Dumbarton, Fairlie [7], Galloway, Georgetown [10], Gladstone [10], Glencoe [2], Grasmere [14], Gummies Bush, Haast, Halfmoon Bay (Oban) [6], Harwood [3], Hawthorndale [6], Heidelberg [9], Invercargill [36], Kelvin Heights [8], Kew [8], Kingswell [11], Lake Hawea [6], Longbush, Lower Shotover, Lumsden [8], Maryhill [3], Mataura [8], Merivale [2], Milton [14], Monowai, Mornington [24], Mosgiel [58], Mossburn [5], North Dunedin [23], North East Valley [19], Oamaru [37], Ohai [6], Omarama [4], Otaitai Bush, Otematata [2], Papanui [14], Pukemaori, Ravensbourne [7], Richmond [16], Rosedale [10], Runanga [4], Saint Kilda [29], South Dunedin [13], Stirling [2], Strathern [15], Tainui [9], Te Tua, The Key, Thornbury, Timaru [32], Tinkertown, Tisbury [3], Tokanui [2], Waianiwa, Waikaka [2], Waimate [8], Wainoni [6], Waipango, Waitati [9], Waldronville [6], Wallacetown [7], Wanaka [76], Warrington [4], Waverley [6], Westport [31], Windsor [19], Wreys Bush [3]
Moderate [1564]: Abbotsford, Abbotsford [7], Addington [6], Albert Town [5], Albury, Alicetown [2], Anakiwa, Andersons Bay [14], Aokautere, Aoraki/Mount Cook, Arahura, Aramoho [5], Aranui [5], Ardgowan [2], Aro Valley [2], Arrowtown [15], Arthurs Point [6], Ascot Park [2], Avalon [4], Avondale [7], Avonside [9], Awarua [2], Balaclava [2], Balfour, Barrys Bay, Beckenham [3], Belfast [4], Belleknowes [16], Belmont [3], Bexley [9], Bishopdale [15], Blaketown [3], Bradford [4], Bridge Hill [4], Brighton [6], Broadmeadows [3], Bromley [4], Brooklands [2], Brooklyn [3], Brown Owl, Bulls [2], Bunnythorpe, Burnside [5], Burwood [14], Camborne, Cannington, Cannons Creek [3], Cape Foulwind, Carters Beach [2], Casebrook [2], Cashmere [6], Cave, Charleston, Christchurch [44], Churton Park [4], Clinton [2], Cloverlea, Clydevale [2], Cobden [7], Colac Bay/Oraka, Collinswood, Concord [4], Corstorphine [6], Cracroft [2], Crofton Downs [2], Crookston, Croydon, Dalefield [3], Dallington [8], Dalmore [2], Darfield [2], Dipton [2], Douglasvale [2], Dunback, Dunollie, Duntroon, Durie Hill, Earnscleugh, Eastbourne [4], East Gore, East Taieri [3], Egmont Village [2], Enfield, Epuni, Ettrick, Fairfield [4], Fairfield, Fairview, Featherston [3], Feilding [4], Fendalton [2], Ferndale, Fernhill [13], Ferrymead, Five Forks, Fortrose, Fox Glacier [2], Foxton [3], Foxton Beach [6], Frankleigh Park, Franz Josef/Waiau [5], Frimley, Garston, Geraldine [2], Gibbston, Glenham, Gleniti [2], Glenleith [8], Glenwood [3], Greenacres, Green Island [9], Grenada Village, Greymouth [16], Halfway Bush [6], Halswell [18], Hamilton [10], Hampden [2], Hampstead, Hannahs Clearing, Harewood [3], Harihari, Hataitai [5], Hawera [3], Heathcote Valley, Heatherlea, Helensburgh [8], Henley, Herbert [2], Heriot [2], Highbury, Highfield [3], Hilderthorpe, Hillmorton, Hillsborough [2], Hillsborough [3], Himatangi Beach, Hokitika [21], Hokowhitu [6], Hoon Hay [10], Hornby [2], Hurdon [2], Ilam [6], Isla Bank [2], Island Bay [4], Johnsonville [5], Judgeford [2], Kaiapoi [19], Kaikorai [2], Kairanga, Kaitangata [2], Kaituna, Kaka, Kakanui [3], Kaniere [3], Kapiti, Kapuka, Karamea [6], Karitane [3], Karori [9], Karoro [2], Kauru Hill, Kelburn [3], Kelvin Grove [2], Kenmure [5], Kennington [5], Kensington [2], Kew [2], Khandallah [11], Kilbirnie [2], Kokiri, Korokoro [2], Kowhitirangi, Kumeroa, Kurow [5], Lake Mackenzie, Lake Tekapo [4], Lawrence, Leighbank, Leith Valley, Levels, Levin [8], Liberton, Linden, Lindis Crossing, Linkwater, Linton, Linwood [5], Livingstone, Long Beach, Longburn, Longridge North, Lora [5], Lowry Bay, Luggate [2], Lyall Bay [4], Lynmouth, Macandrew Bay [9], Macraes Flat, Maheno [2], Maia [2], Mairehau [13], Makarewa [4], Manakau, Maoribank, Maori Hill [6], Marchwiel [4], Martinborough [2], Marton [5], Marybank, Massey University [3], Masterton [2], Maungaraki [4], Maungawera, Melrose [3], Merrilands [3], Merrivale, Methven, Middlemarch [3], Mikimiki, Milburn [3], Milford Sound, Miramar [10], Moa Flat [2], Moeraki, Momona, Moneymore, Motueka [6], Moturoa, Mount Cardrona, Mount Cook [2], Mount Cook [2], Mount Somers, Mount Victoria [3], Murchison [5], Musselburgh [2], Myross Bush [2], Naenae [4], Naseby, Nelson [3], New Brighton [5], Newlands [3], New Plymouth [2], Newtown [8], Ngaio [15], Ngongotaha, Nightcaps, Normanby [2], Normandale [2], Northland [3], North New Brighton [8], Oaklands [2], Oakura [2], Ocean Grove [2], Oceanview [3], Ocean View, Ohakea, Okarito, Okuru, Omakau, Omarama, Opawa [2], Opio, Opoho [6], Otaihanga [3], Otaki [3], Otamatea, Otekaieke, Outram [6], Oxford [2], Paekakariki [6], Pahiatua, Palmerston [5], Palmerston North, Papakowhai, Paraparaumu [17], Paraparaumu Beach [10], Paremata [2], Pareora, Parklands [8], Parkside [5], Paroa [5], Patea, Patearoa, Peka Peka, Petone [4], Phillipstown [2], Picton, Pinehaven, Pine Hill [7], Pleasant Point [11], Plimmerton [6], Point Howard, Pokororo, Porirua, Port Chalmers [5], Portobello [4], Prebbleton [2], Pukehiki, Pukerau, Pukerua Bay [8], Puketi, Pukeuri, Queenstown Hill [2], Ranfurly [8], Rangiora [7], Rangiotu, Ranui Heights, Rapahoe, Raumati Beach [11], Raumati South [11], Redwood [12], Redwoodtown, Reefton, Reidston, Reikorangi, Riccarton [10], Richmond [6], Richmond [2], Riversdale [3], Roseneath, Roseneath [2], Roslyn Bush [2], Ross, Roxburgh [3], Ruru, Ryal Bush [3], Saint Albans [20], Saint Clair [14], Saint Leonards [2], Saint Martins [5], Sanson, Sawyers Bay [5], Seatoun [2], Seaview [3], Seaward Downs, Sheffield, Shiel Hill [4], Shirley [8], Silverstream [5], Sockburn, Somerfield [9], Southgate, South New Brighton [3], Southshore [2], Spotswood [2], Spreydon [10], Spring Creek, Springvale, Staveley, Stoke, Stokes Valley [5], Stratford [3], Strathmore Park [3], Summerhill [2], Sumner [3], Sunshine, Sydenham [7], Tahunanui [3], Tai Tapu [2], Takaka [3], Tapanui [2], Tarras [2], Taumarunui, Tawa [19], Te Aro [6], Te Horo Beach [2], Temuka [5], Te Ore Ore, Thorndon [2], Titahi Bay [7], Tokoiti, Totara Park, Totara Valley, Trentham [2], Turakina [2], Tussock Creek [2], Twizel [17], Upper Hutt [2], Upper Riccarton [5], Vauxhall, Vogeltown [4], Waddington, Wadestown [6], Waianakarua, Waihaorunga, Waihola [3], Waihopai, Waikaia, Waikanae [11], Waikanae Beach, Waikouaiti [5], Waimairi Beach [4], Waimangaroa, Waimataitai [2], Waimumu, Wainuiomata [17], Waipara, Waitangirua, Waitarere, Wakari [13], Wanganui [6], Wanganui East [8], Washdyke [4], Waterloo [3], Watlington [3], Waverley [4], Waynes, Welbourn, Wellington [13], Wellington Cbd [6], West End [3], West Melton, Westmorland, Weston [9], Westown [3], Westwood [2], Whataroa [3], Whitby [23], Whitemans Valley [5], Wigram [2], Willowbank, Wilton [6], Wingatui, Woodbourne, Woodend [4], Woodlands [2], Woolston [11], Wyndham [4]
Slight [79]: Acacia Bay, Allenton, Ashburton [2], Ashhurst, Atarau, Auckland [2], Awakeri, Bell Block, Blenheim, Brooklands, Bryndwr, Cheviot, Claudelands, Eltham, Epsom, Gonville, Granity, Grantlea, Greta Valley, Hamilton East, Hanmer Springs, Havelock, Hawarden, Highlands Park [3], Horsham Downs, Hunua, Inglewood, Kimbolton, Lake Coleridge, Leeston, Mahana, Mahora, Marahau, Marshland, Maupuia, Merton, Middleton, Morven, Newbury, Ngahere, Ngahinapouri, Normanby, Ohinetahi, Omata, Orewa, Otorohanga, Owhata [2], Pihama, Pukehangi, Puketaha, Raukawa, Riversdale, Roslyn, Rotorua, Saint Johns Hill, Southbridge, Spencerville, Springvale [2], Strowan, Sunnybrook, Taita, Tangimoana, Tarurutangi, Templeton, Tokomaru, Tuahiwi, Tuamarina, Waikuku Beach, Waltham [2], Ward, Whalers Gate, Woodridge
new zealand earthquakes ~ preliminary maps, lists and graphs ~ 1810-2014 