Burdekin River, NE Queensland October-September river flow reconstructed from luminescence range: 1648-2011 Lough, J.M.; Lewis, S.E.; Cantin, N.E. Lough, J.M. Lewis, S.E. Cantin, N.E. Monsoon Streamflow Reconstruction earth science/paleoclimate/climate reconstructions|corals and sclerosponges (streamflow,luminescence,null,cubic kilometer,Oct-Sep,climate reconstructions|corals and sclerosponges,null,regression analysis,N,exponential regression) earth science/paleoclimate/corals and sclerosponges (luminescence,Porites sp.,null,dimensionless,null,corals and sclerosponges,raw,luminescence spectroscopy,N,null) earth science/paleoclimate/corals and sclerosponges (age,null,null,year Common Era,null,corals and sclerosponges,null,null,N,null) earth science/paleoclimate/climate reconstructions|corals and sclerosponges (age,null,null,year Common Era,null,climate reconstructions|corals and sclerosponges,null,null,N,null) earth science/paleoclimate/corals and sclerosponges (Havannah Island>LATITUDE -18.85>LONGITUDE 146.55) The Australian summer monsoon is highly variable from year to year resulting in high variability in the magnitude and extent of freshwater river flood plumes affecting the Great Barrier Reef (GBR). These flood plumes transport terrestrial materials and contaminants to the reef and can have significant impacts on both water quality and ecosystem health. The occurrence and intensity of these freshwater flood plumes are reliably recorded as annual luminescent lines in inshore massive corals and occasional luminescent lines in mid-shelf corals. We use measured luminescence in a long Porites core and four recently collected short cores from Havannah Island (a nearshore reef in the central GBR) to reconstruct Burdekin River flow, 1648–2011, and five recent short cores from Britomart Reef (a mid-shelf reef, 65 km northeast of Havannah Island) to assess the frequency of flood plume events extending beyond the inshore to mid-shelf reefs. The reconstruction highlights that the frequency of high flow events has increased in the GBR from 1 in every 20 yr prior to European settlement (1748–1847) to 1 in every 6 yr reoccurrence (1948–2011). Three of the most extreme events in the past 364 yr have occurred since 1974, including 2011. The reconstruction also shows a shift to higher flows, increased variability from the latter half of the nineteenth century, and likely more frequent freshwater impacts on mid-shelf reefs. This change coincided with European settlement of northern Queensland and substantial changes in land use, which resulted in increased sediment loads exported to the GBR. The consequences of increased sediment loads to the GBR were, therefore, likely exacerbated by this climate shift. This change in Burdekin River flow characteristics appears to be associated with a shift towards greater El Niño–Southern Oscillation variability and rapid warming in the southwest Pacific, evident in independent palaeoclimatic records. STUDY NOTES: Reconstructed October-September Burdekin River flow (km3). Annual luminescence range data for 1 long core and 4 modern short cores are also provided. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Lough, J.M. Investigator : Lewis, S.E. Investigator : Cantin, N.E. 2015-06-24 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/18917 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2015/lough2015-hav01a.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2015/lough2015-hav31b.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2015/lough2015-hav32a.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2015/lough2015-hav34a.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2015/lough2015-flow.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2015/lough2015-hav33a.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2015/lough2015-hav01a.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2015/lough2015-hav31b.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2015/lough2015-hav32a.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2015/lough2015-hav34a.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2015/lough2015-flow.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2015/lough2015-hav33a.txt English https://www.ncdc.noaa.gov/paleo/study/18917 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2015/lough2015-hav01a.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2015/lough2015-hav31b.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2015/lough2015-hav32a.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2015/lough2015-hav34a.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2015/lough2015-flow.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2015/lough2015-hav33a.txt Lough, J.M., S.E. Lewis, and N.E. Cantin2015Freshwater impacts in the central Great Barrier Reef: 1648-2011Coral Reefs343739-75110.1007/s00338-015-1297-8 START YEAR: 1648 AD * END YEAR: 2011 AD 146.55 -18.85 146.55 -18.85