GNS Science Report 2013/45
Total Page:16
File Type:pdf, Size:1020Kb
BIBLIOGRAPHIC REFERENCE Scott, B.J. 2013. A revised catalogue of Ruapehu volcano eruptive activity: 1830-2012, GNS Science Report 2013/45. 113 p. B.J. Scott, GNS Science, Private Bag 2000, Taupo 3352 © Institute of Geological and Nuclear Sciences Limited, 2013 ISSN 1177-2425 ISBN 978-1-972192-92-4 CONTENTS ABSTRACT ......................................................................................................................... IV KEYWORDS ........................................................................................................................ IV 1.0 INTRODUCTION ........................................................................................................ 1 2.0 DATASETS ................................................................................................................ 2 3.0 CLASSIFICATION OF ACTIVITY ............................................................................... 3 4.0 DATA SET COMPLETNESS ...................................................................................... 5 5.0 ERUPTION NARRATIVE ............................................................................................ 6 6.0 LAHARS ................................................................................................................... 20 7.0 DISCUSSION............................................................................................................ 22 8.0 REFERENCES ......................................................................................................... 28 TABLES Table 3.1 Magnitude scale for hazard zones established for historical eruptions at Ruapehu and return periods, after Houghton et al. (1987).................................................................................. 3 Table 3.2 Semi-quantitative estimate of the size of Ruapehu eruptions based on observed effects, after Sherburn et al. (1999). ......................................................................................................... 3 Table 3.3 Semi-quantitative estimate of the size of Ruapehu eruptions based on observed effects, after Wilson (2009). ..................................................................................................................... 3 Table 3.4 Semi-quantitative estimate of the scale of Ruapehu eruptions based on observed effects (modified from Houghton et al., 1987; Sherburn et al., 1999 and Wilson, 2009). ......................... 4 Table 6.1 Summary of eruptive activity that has or may have produced lahars at Ruapehu. ..................... 20 Table 7.1 List highlighting periods of enhanced eruptive activity that have been identified visually from the data set. ....................................................................................................................... 23 Table 7.2 Frequency distribution for all eruptive activity observations post 1830 (181 years). ................... 24 Table 7.3 Frequency distribution for all eruptive activity observations post 1940 (72 years). ..................... 24 Table 7.4 Eruption recurrence rates for the 1831 to 2012 data set (181 years). ........................................ 26 Table 7.5 Eruption recurrence rates for the 1940 to 2012 data set (72 years). .......................................... 26 Table 7.6 Frequency distribution for all eruptive activity observations post 1830, excluding the 1945 and 1995/1996 eruptive episodes and greater than scale 2. ...................................................... 26 Table 7.7 Eruption recurrence rates for the 1830 to 2012 data set (177 years), excluding the 1945 and 1995/1996 eruptive episodes. ............................................................................................. 27 FIGURES Figure 4.1 Cumulative frequencey (red dots) and frequency (blue squares) plot of Ruapehu eruption scale data post 1830. ................................................................................................................... 5 Figure 5.1 The volcano of Ruapehu, Province of Auckland, NZ. ................................................................... 7 Figure 5.2 View of Ruapehu Crater Lake on 5 April 1895 (Lands and Survey, 1895). .................................. 9 Figure 5.3 Image of Ruapehu in eruption 10 March 1895, reproduced in the supplement to the Auckland Weekly News 29 March 1906 (p.4). .............................................................................. 9 Figure 5.4 View possibly from Waiouru showing eruption cloud over Mt Ruapehu, 28 April 1905. ............. 10 Figure 5.5 Otago Witness 8 May 1907: “The Crater Lake on Ruapehu recently in violent eruption”. .......... 10 GNS Science Report 2013/45 i Figure 5.6 Aerial view of the crater, Mt Ruapehu, photographed by Whites Aviation in August 1947. ........ 12 Figure 5.7 Strongly steaming Crater Lake, 25 July 1966. Photo: J Healy, GNS VML 103437. .................... 13 Figure 5.8 Fresh low density lava fragment that was found in the outlet area, 3 August 1966. ................... 13 Figure 5.9 Summit area of Mt Ruapehu, 22 June 1969 showing eruption affects. ...................................... 15 Figure 5.10 Summit of Ruapehu showing Crater Lake and eruption affects, 2 November 1977. .................. 15 Figure 5.11 Ruapehu Crater Lake, A – 13 October 1981 showing a large sulphur slick on the lake surface. B – small phreatic eruption 28 December 1981. ........................................................... 16 Figure 5.12 Views of small phreatic events in the Ruapehu’s Crater Lake, A – 21 January 1982; B – 11 February 1982. ................................................................................................................ 17 Figure 5.13 Eruptive activity through Ruapehu Crater Lake 24 September 1995. ......................................... 18 Figure 5.14 Strong ash emission from Ruapehu, 19 June 1996. ................................................................... 19 Figure 7.1 Time series plot showing eruption scale verses time from 1830 to 2012. .................................. 22 Figure 7.2 Cumulative number of eruptions from Ruapehu, 1830 to 2012. ................................................. 22 Figure 7.3 Cumulative frequencey (red dots) and frequency (blue squares) plot of Ruapehu eruption scale data post 1940. ................................................................................................................. 25 Figure 7.4 Cumulative frequencey (red dots) and frequency (blue squares) plot of Ruapehu eruption scale data, excluding the 1945 and 1995/1996 eruptive episodes. ............................................ 27 APPENDICES APPENDIX 1: DETAILED ERUPTIVE OBSERVATIONS AND NARRATIVES .................... 33 A1.1 1830s ........................................................................................................................... 33 A1.2 1850s ........................................................................................................................... 33 A1.3 1860s ........................................................................................................................... 33 A1.4 1870s ........................................................................................................................... 37 A1.5 1880s ........................................................................................................................... 38 A1.6 1890s ........................................................................................................................... 52 A1.7 1900s ........................................................................................................................... 66 A1.8 1910s ........................................................................................................................... 73 A1.9 1920s ........................................................................................................................... 74 A1.10 1930s ........................................................................................................................... 75 A1.11 1940s ........................................................................................................................... 77 A1.12 1950s ........................................................................................................................... 81 APPENDIX 2: SUMMARY OF ERUPTIVE AND LAHAR ACTIVITY AT RUAPEHU FROM 1830 TO 2012 ............................................................................................... 83 APPENDIX FIGURES Figure A 1.1 Map illustrating the summit of Ruapehu (Hill, 1891). .................................................................. 53 Figure A 1.2 Sketch of the Crater Lake area provide in Hill (1891). ................................................................ 54 Figure A 1.3 G Allen’s 9 March 1894 sketch of the Crater Lake area. ............................................................ 56 Figure A 1.4 George Frederic Allen sketched this view of Mt. Ruapehu on 10 March 1895, the day it erupted. ...................................................................................................................................... 57 Figure A 1.5 An illustration of Ruapehu in eruption, printed in the Illustrated Australian News (1 April 1895). ......................................................................................................................................... 63 Figure A 1.6 Ruapehu Crater Lake as published in the Auckland Weekly News 8 May 1902 (p.2).