New Zealand Seismic Surveys With the R/V Lansgseth 1) SHIRE - PowerPoint PPT Presentation

New Zealand Seismic Surveys With the R/V Lansgseth 1) SHIRE Two-ship OBS/2D MCS -StaJons on land -OBS deployments NZ3D -Long streamer MCS Nov 1 st – Dec 7 th SHIRE 2) NZ3D 3D mcs – 15 x 60 km -OBS and land instruments Jan 6 th – Feb 9 th 3) SISIE 2D OBS/MCS -UTIG OBS SISIE -Long streamer MCS Feb 13 th – Mar 12 th

Science Goals • SHIRE – Crustal scale structure of the subducJon zone and variaJon along the margin – Deep sediment and NZ3D seamount subducJon; – Structure of the Hikurangi plateau (subducJng crust) SHIRE • NZ3D – Development of the megathrust its relaJon to slow-slip earthquakes. • SISIE SISIE – SubducJon iniJaJon along the Puysegur trench

175 ˚ 176 ˚ 177 ˚ 178 ˚ 179 ˚ 180 ˚ SHIRE -37 ˚ -37 ˚ R/V Langseth & R/V Tangaroa Line5 Line3 Line4 Line6 1 e n 104 – Land StaJons i L Line21 -38 ˚ -38 ˚ Line20 Line22 Line7 Line37 110 – Japanese OBS L 5 2 i Line19 Line11 L Line26 n e n e i Line27 i Line31 n L 3 3 8 e Line23 6 8 deployments Line28 e Line24 Line36 Line30 Line29 n Line64 Line62 i Line61 L Line35 Line39 Line32 L -39 ˚ Line10 -39 ˚ i n Line56 e 3 4 1443 km OBS lines Line33 Line52 Line51 L i n e 5 5 Line53 4046 km MCS lines 7 Line54 Line50 5 e (12.7 km streamer) -40 ˚ n -40 ˚ i L Line12 Line58 7 102% of planned 4 L e L i n n i n i e e L 4 8 4 9 L i n Students e 6 0 Line18 Line40 Line43 Line59 Line46 3 – Imperial College -41 ˚ -41 ˚ Line42 2 – UT-AusJn L i n e 4 Line45 4 1 – Otaga University Line15 Line14 1- University of Auckland 3 1 e L n i n i L e -42 ˚ -42 ˚ 1 Line17 6 Postdoc 1 4 e n L i 1- GNS Science -43 ˚ -43 ˚

Source-receiver offset (km) 5 12.5 0 10 4 Line 50 - Shot 60800 5 6 Time (s) 7 8 9 10

175 ˚ 176 ˚ 177 ˚ 178 ˚ 179 ˚ 180 ˚ OBS Line 4 / -37 ˚ -37 ˚ Line5 Line3 Line4 Line6 Line1 Line21 -38 ˚ -38 ˚ L i n MCS Line 40 e 2 0 Line7 L i n e 2 L 2 i n e 3 5 L Line11 Line26 2 n i Line19 Line8 n 7 e e Line31 L Line27 i Line63 3 8 Line23 L Line36 Line30 i n L e L i n Line64 Line62 2 e L 8 i 2 i n 4 Line35 n e e L 6 i n Line32 2 e 1 -39 ˚ Line34 9 3 -39 ˚ Line10 9 S Line56 Line33 L i n e 5 2 Line51 L i n e 5 5 L i n e 5 3 Line54 Line57 Line50 -40 ˚ -40 ˚ 2 1 Line58 e Line47 n i L L L i i n n e e 4 8 4 9 Line60 Line18 Line40 2 Line43 Line59 Line46 -41 ˚ -41 ˚ L i n e 4 2 L i n e 4 Line45 4 5 1 e n Time (s) L i Line14 Line13 Line16 -42 ˚ Line17 -42 ˚ Line41 -43 ˚ -43 ˚ 175 ˚ 176 ˚ 177 ˚ 178 ˚ 179 ˚ 180 ˚ 4 6 100 km

175 ˚ 176 ˚ 177 ˚ 178 ˚ 179 ˚ 180 ˚ OBS Line 4 / -37 ˚ -37 ˚ Line5 Line3 Line4 Line6 Line1 Line21 -38 ˚ -38 ˚ L i n MCS Line 40 e 2 0 Line7 L i n e 2 L 2 i n e 3 5 L Line11 Line26 2 n i Line19 Line8 7 n e e Line31 Line27 L i Line63 3 8 Line23 L Line36 Line30 i n L e L i n Line64 Line62 2 e L 8 i 2 i n 4 Line35 n e e L 6 i n Line32 2 e 1 -39 ˚ Line34 9 3 -39 ˚ Line10 9 S Line56 Line33 L i n e 5 2 Line51 L i n e 5 5 L i n e 5 3 Line54 Line57 Line50 -40 ˚ -40 ˚ 2 1 Line58 e Line47 n i L L L i i n n e e 4 8 4 9 Line60 Line40 Line18 2 Line43 Line59 Line46 -41 ˚ -41 ˚ L i n e 4 2 L i n e 4 Line45 4 5 1 e n Time (s) L i Line14 Line13 Line16 -42 ˚ Line17 -42 ˚ Line41 -43 ˚ -43 ˚ 175 ˚ 176 ˚ 177 ˚ 178 ˚ 179 ˚ 180 ˚ 4 6 100 km

175 ˚ 176 ˚ 177 ˚ 178 ˚ 179 ˚ 180 ˚ OBS Line 4 / -37 ˚ -37 ˚ Line5 Line3 Line4 Line6 Line1 Line21 -38 ˚ -38 ˚ L i n MCS Line 40 e 2 0 Line7 L i n e 2 L 2 i n e 3 5 L Line11 Line26 2 i n Line19 Line8 7 n e e Line31 L Line27 i Line63 3 8 Line23 L Line36 Line30 i n L e L i n Line64 Line62 2 e L 8 i 2 i n 4 Line35 n e e L 6 i n Line32 2 e 1 -39 ˚ Line34 9 3 -39 ˚ Line10 9 Line56 S Line33 L i n e 5 2 Line51 L i n e 5 5 L i n e 5 3 Line54 Line57 Line50 -40 ˚ -40 ˚ 2 1 Line58 e Line47 n i L L L i i n n e e 4 8 4 9 Line60 Line18 Line40 Line43 Line59 Line46 -41 ˚ -41 ˚ L i n e 4 2 L i n e 4 Line45 4 5 1 e n L i Line14 Line13 Line16 -42 ˚ Line17 -42 ˚ Line41 -43 ˚ -43 ˚ 175 ˚ 176 ˚ 177 ˚ 178 ˚ 179 ˚ 180 ˚ 4 Time (s) 6 25 km

175 ˚ 176 ˚ 177 ˚ 178 ˚ 179 ˚ 180 ˚ MCS Line 44 -37 ˚ -37 Line5 Line3 Line4 L Line1 i n e 6 Line21 -38 ˚ -38 L (processed by student Team B) i n e 2 0 Line7 L i n e 2 Line37 2 E 5 Line38 L Line11 L Line26 e 2 n Line31 i n L Line27 i i n Line63 e 3 e 8 Line28 2 1 L 6 Line24 i n e Line64 L e 3 3 0 9 Line62 e L i n n i 5 n n i e e L Line39 3 i 6 L Line32 1 2 e -39 ˚ L L 9 -39 i n n i n Line56 e i 3 e L 4 1 0 Line33 Line52 Line51 Line55 L i n e 5 3 Line54 7 Line50 5 e -40 ˚ n -40 i L Line12 Line58 7 4 L e Line48 n i n L i e 4 9 Line60 8 0 4 1 e e 3 Line59 Line46 n n 4 i i e L L n -41 ˚ L i -41 Line42 Line44 5 4 e n i Line15 L Line14 3 1 e Line16 n i L -42 ˚ Line17 -42 4 Line41 Time (s) 6 5 km 8

MCS Line 48 Line21 L i n e 2 0 Line7 L i n e 2 Line37 2 Line25 Line38 Line19 Line11 Line8 6 1 Line27 2 3 Line63 e e Line23 n L i n L Line36 Line30 i n L i e 4 L i n L e Line62 6 2 Line61 8 n i 2 e 4 5 L n e 3 i n Line32 i 2 e e L 3 -39 ˚ Line34 Line10 9 -39 9 n Line56 W i L Line33 Line52 Line51 Line55 L i n e 5 3 L Line57 Line50 i n e -40 ˚ -40 5 4 Line12 L i n Line47 e 5 8 Line49 Line48 Line60 8 0 1 4 e e Line43 Line59 Line46 n n i i L L 2 -41 ˚ -41 Line42 L i n e 4 Line45 4 Line15 L i n Line13 e 1 Line16 4 -42 ˚ 7 -42 1 e n i L Line41 -43 ˚ -43 175 ˚ 176 ˚ 177 ˚ 178 ˚ 179 ˚ 180 ˚ 4 Time (s) 6 10 km

Line3 4 e n i L L 1 n i e e n 6 i L Line21 -38 ˚ -38 ˚ L i n e 2 0 L Line7 i n e MCS Line 42 2 Line37 2 Line38 Line25 Line19 Line11 Line8 Line26 L Line31 Line63 i 3 n Line28 e L 2 Line36 Line30 i Line64 2 Line29 n e Line62 e 2 n Line61 7 4 5 i Line39 L 3 Line32 e Line34 -39 ˚ L -39 ˚ n i n Line56 e i L 1 0 Line33 Line52 L Line55 i n e 5 1 W L i n e 5 3 Line57 Line50 Line54 -40 ˚ -40 ˚ 2 1 Line58 e Line47 n i L L Line48 i n e 4 9 Line60 Line40 Line18 Line43 Line59 L i n e 4 6 -41 ˚ -41 ˚ Line42 Line44 Line45 5 1 e n i L Line14 Line13 Line16 -42 ˚ -42 ˚ Line17 2 Line41 -43 ˚ -43 ˚ 175 ˚ 176 ˚ 177 ˚ 178 ˚ 179 ˚ 180 ˚ Time (s) 4 10 km

Line21 L n i e 2 0 Line7 L i n e 2 Line37 2 Line25 Line38 Line11 6 Line19 Line8 Line31 Line27 2 3 e Line23 MCS Line 48 6 n L Line36 Line30 e i n Line24 i e L L n 4 Line62 2 Line61 L i 6 8 i n 5 e e L 3 n i n Line32 2 e L i -39 ˚ e Line34 9 3 -39 Line10 9 n 6 i 5 L e n 3 i L 3 Line52 e n Line51 Line55 i L L i n e 5 3 L 7 Line50 i 5 n e e W -40 ˚ n -40 5 i L 4 Line12 Line58 7 4 Line49 e Line48 n L i L i n e 6 0 8 0 4 1 e e 3 9 Line46 n n 4 5 i i e e L L n n L i -41 ˚ L i -41 Line42 Line44 Line45 Line15 0 L i n 3 e 1 1 e Line16 n 4 L i -42 ˚ Line17 -42 Line41 -43 ˚ -43 175 ˚ 176 ˚ 177 ˚ 178 ˚ 179 ˚ 180 ˚ 2 Time (s) 4 6 10 km 8

OBS Line 3/MCS Line 12 N S 175 ˚ 176 ˚ 177 ˚ 178 ˚ 179 ˚ 180 ˚ -37 ˚ -37 Line5 0 Line4 Line3 Line6 1 e n i L -38 ˚ Line21 -38 Line20 Line7 Line22 L i n e L 3 5 i L Line8 1 Line26 1 e 2 n i n e Line27 n 7 e i Line31 L L i 3 3 n 8 6 Line23 e Line28 e Line24 1 Line36 L i n n e Line64 Line29 9 Line62 3 0 i L L i Line35 n Line39 e 6 Line32 1 -39 ˚ L L -39 i n e i n 6 3 e 5 4 1 0 e n 3 L i 3 L i n e 5 2 e n Line51 i L L n i e 5 5 Line53 2 Line57 Line54 Line50 -40 ˚ -40 Line12 Line58 Line47 L Time (s) L i n i n e e 4 8 4 9 L i n e 6 0 Line18 Line40 3 Line59 4 Line46 e n i -41 ˚ L -41 L i n e 4 2 L i n e 4 Line45 4 5 1 e n i L 4 Line14 3 1 e n Line16 i L -42 ˚ -42 Line17 4 1 n e L i -43 ˚ -43 6 5 km 8

OBS Line 3/MCS Line 12 3D N S 175 ˚ 176 ˚ 177 ˚ 178 ˚ 179 ˚ 180 ˚ -37 ˚ -37 Line5 0 Line4 Line3 Line6 1 e n i L -38 ˚ Line21 -38 Line20 Line7 Line22 L i n e L 3 5 i L Line8 1 Line26 1 e 2 n i n e Line27 7 n e i Line31 L L i 3 3 n 8 6 Line23 e Line28 e Line24 1 Line36 L i n Line64 e n Line29 9 Line62 3 0 i L L i Line35 n Line39 e 6 Line32 1 -39 ˚ L L -39 i n e i n 6 3 e 5 4 1 0 e n 3 L i 3 L i n e 5 2 e n Line51 i L L n i e 5 5 Line53 2 Line57 Line54 Line50 -40 ˚ -40 Line12 Line58 Line47 L Time (s) L i n i n e e 4 8 4 9 L i n e 6 0 Line18 Line40 3 Line59 4 Line46 e n i -41 ˚ L -41 L i n e 4 2 L i n e 4 Line45 4 5 1 e n i L 4 Line14 3 1 e n Line16 i L -42 ˚ -42 Line17 4 1 n e L i -43 ˚ -43 6 5 km 8

New Zealand Seismic Surveys With the R/V Lansgseth 1) SHIRE - PowerPoint PPT Presentation

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