# Burdekin River, NE Queensland October-September river flow reconstructed from luminescence range: 1648-2011 #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # NOTE: Please cite Publication, and Online_Resource and date accessed when using these data. # If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed. # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/18917 # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/lough2015/lough2015-hav32a.txt # # Original_Source_URL: # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Corals and Sclerosponges # # Parameter_Keywords: reconstruction; physical properties #-------------------- # Contribution_Date # Date: 2015-06-24 #-------------------- # Title # Study_Name: Burdekin River, NE Queensland October-September river flow reconstructed from luminescence range: 1648-2011 #-------------------- # Investigators # Investigators: Lough, J.M.; Lewis, S.E.; Cantin, N.E. #-------------------- # Description_Notes_and_Keywords # Description: Reconstructed October-September Burdekin River flow (km3). Annual luminescence range data for 1 long core and 4 modern short cores are also provided. # #-------------------- # Publication # Authors: Lough, J.M., S.E. Lewis, and N.E. Cantin # Published_Date_or_Year: 2015 # Published_Title: Freshwater impacts in the central Great Barrier Reef: 1648-2011 # Journal_Name: Coral Reefs # Volume: # Edition: # Issue: # Pages: # Report_Number: # DOI: 10.1007/s00338-015-1297-8 # Online_Resource: # Full_Citation: # Abstract: 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. #------------------ # Funding_Agency # Funding_Agency_Name: Australian Institute of Marine Science # Grant: #------------------ # Site_Information # Site_Name: Havannah Island # Location: Great Barrier Reef # Country: Australia # Northernmost_Latitude: -18.85 # Southernmost_Latitude: -18.85 # Easternmost_Longitude: 146.55 # Westernmost_Longitude: 146.55 # Elevation: #------------------ # Data_Collection # Collection_Name: HAV32A Lough15 # Earliest_Year: 1986 # Most_Recent_Year: 2011 # Time_Unit: AD # Core_Length: # Notes: #------------------ # Chronology_Information # Chronology: # #---------------- # Variables # # Data variables follow are preceded by "##" in columns one and two. # Data line variables format: Variables list, one per line, shortname-tab-longname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) # ## age_AD age, , , calendar years before present, , , , ,N ## lumin luminescence,,,luminescence units,,corals and sclerosponges,,,N #---------------- # Data: # Data line format - tab-delimited text, variable short name as header # Missing Values: -999 age_AD lumin 1986 0.228 1987 0.067 1988 0.178 1989 0.097 1990 0.193 1991 0.509 1992 0.07 1993 0.094 1994 0.131 1995 0.114 1996 0.129 1997 0.288 1998 0.167 1999 0.114 2000 0.242 2001 0.249 2002 0.045 2003 0.116 2004 0.056 2005 0.081 2006 0.093 2007 0.182 2008 0.327 2009 0.352 2010 0.124 2011 0.446