PANGAEA_913797 Shallow seismicity and the classification of structures in the Lau back-arc basin Baxter, Alan T; Hannington, Mark D; Stewart, Margaret S; Emberley, Justin M; Breker, Kaitlyn; Krätschell, Anna; Petersen, Sven; Brandl, Philipp A; Klischies, Meike; Mensing, Rebecca; Anderson, Melissa O Shallow seismicity and the classification of structures in the Lau back-arc basin 2020-03-20 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.913797 Investigator Alan T Baxter abaxter2@uottawa.ca Earth Science Event label LONGITUDE Longitude, error LATITUDE Latitude, error Coordinate uncertainty Hypocenter depth Hypocenter depth, error DATE/TIME Time, standard error Moment magnitude Surface wave magnitude Body wave magnitude Strike Dip Rake Moment tensor Mrr Moment tensor Mtt Moment tensor Mpp Moment tensor Mrt Moment tensor Mrp Moment tensor Mtp Moment tensor Mrr, error Moment tensor Mtt, error Moment tensor Mpp, error Moment tensor Mrt, error Moment tensor Mrp, error Moment tensor Mtp, error Scalar moment Principle axis, T Principle axis, T, azimuth Principle axis, T, plunge Principle axis, N Principle axis, N, azimuth Principle axis, N, plunge Principle axis, P Principle axis, P, azimuth Principle axis, P, plunge Longitude 2 Latitude 2 Body waves, stations Body waves, components Body waves, shortest period Surface waves, stations Surface, components Surface waves, shortest period Mantle waves, stations Mantle waves, components Mantle waves, shortest period Comment Type Location Time Stamp Area/locality geoscientificInformation B010186B B010285E B010484C B010783C B010783E B010903A B011101E B011398E B011498H B011683A B011694B B011694F B011700C B011700E B011777B B011800B B012099A B012300F B012300I B012385B B012598A B012699D B012999A B020201E B020487B B020494A B020796B B020901A B021298F B021581B B021587A B021696B B022093C B022102F B022387C B022491B B022503C B022689B B022787B B030395E B030601B B030880A B030894B B031198D B031293F B031387A B031387B B031387E B031393C 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C201701141034A C201702091452A C201702100718A C201702191102A C201702202129A C201702202355A C201703061631A C201703141503A C201703212213A C201704081834A C201704220235A C201705180804A C201705211944A C201705252110A C201705290533A C201706020611A C201706090133A C201706190713A C201706211021A C201706251742A C201706252149A C201707140037A C201710070028A C201710081404A C201710090708A C201710090713A C201710100441A C201711131658A C201711201851A C201712161705A CMTs D111679A earthquake Lau Basin seismicity 1977-01-17 2017-12-16 Complete -26.6 -14.0 -179.99 -173.14 GCMT Global Centroid Moment Tensor Project unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

Leobener Str.

Bremen Bremen 28359 Germany online 42372 data points text/tab-separated-values Baxter, Alan T; Hannington, Mark D; Stewart, Margaret S; Emberley, Justin M; Breker, Kaitlyn; Krätschell, Anna; Petersen, S; Brandl, Philipp A; Klischies, Meike; Mensing, Rebecca; Anderson, Melissa O (accepted): Shallow seismicity and the classification of structures in the Lau back-arc basin. Geochemistry, Geophysics, Geosystems, https://doi.org/10.1029/2020GC008924 Dziewonski, A M; Chou, T-A; Woodhouse, J H (1981): Determination of earthquake source parameters from waveform data for studies of global and regional seismicity. Journal of Geophysical Research: Solid Earth, 86(B4), 2825-2852, https://doi.org/10.1029/JB086iB04p02825 Ekström, G; Nettles, M; Dziewonski, A M (2012): The global CMT project 2004–2010: Centroid-moment tensors for 13,017 earthquakes. Physics of The Earth and Planetary Interiors, 200-201, 1-9, https://doi.org/10.1016/j.pepi.2012.04.002 Ekström, G; Nettles, M: Global CMT database - download from October 2018 [dataset]. Lamont-Doherty Earth Observatory of Colombia University, New York, https://www.globalcmt.org

We compared Centroid Moment Tensors (CMTs), calculated for large (Mw >5), shallow (<30 km) seismic events to the orientations of seafloor lineaments (n = 4000) mapped throughout the Lau Basin, in the SW Pacific. Ship-based multibeam was combined with vertical gravity gradient data to provide comprehensive coverage to create the lineament map. By comparing the possible focal planes of the CMTs to the orientations of the lineaments, the most likely fault plane solutions were selected, thus classifying the faults and establishing the nature of the highly variable stress regimes in the basin. We resolved the strike, dip and dip direction of 308 faults, and classified 258 additional structures by fault type. The majority of the table was data downloaded from the Global Centroid Moment Tensor (GCMT) database (www.globalcmt.org: accessed October 2018). For more details about the column headers consult the GCMT database website. New data from this study include the latitude and longitude error estimates (in meters), the classified faults (column: 'fault_type'), and the stress domain (column: 'stress_domain'), allocated to each of the classified faults. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.913797"!

http://en.wikipedia.org/wiki/ISO_6709 LATITUDE http://en.wikipedia.org/wiki/ISO_6709 LONGITUDE http://en.wikipedia.org/wiki/ISO_8601 DATE/TIME https://doi.org/10.1016/j.pepi.2012.04.002 The global CMT project 2004–2010: Centroid-moment tensors for 13,017 earthquakes https://doi.org/10.1029/2020GC008924 Shallow seismicity and the classification of structures in the Lau back-arc basin https://doi.org/10.1029/JB086iB04p02825 Determination of earthquake source parameters from waveform data for studies of global and regional seismicity https://en.wikipedia.org/wiki/Rake_(geology) Rake https://en.wikipedia.org/wiki/Strike_and_dip Dip https://en.wikipedia.org/wiki/Strike_and_dip Strike https://www.globalcmt.org/ GCMT https://www.globalcmt.org Global CMT database - download from October 2018 DIF 9.4 2020-03-20 2026-04-30