Nereson 2010 Sedimentation Rates in the Distal Basin of Arctic Proglacial Linnévatnet, Western Spitsbergen, Svalbard: Evidence from Radioactive Fallout Cesium-137

• Main Author: ACADIS Community Support
• Format: Dataset
• Language: unknown
• Published: Arctic Data Center 2013
• Subjects: EARTH SCIENCE > LAND SURFACE > EROSION/SEDIMENTATION > SEDIMENTS; EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE; EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > GLACIERS/ICE SHEETS > GLACIER MASS BALANCE/ICE SHEET MASS BALANCE; EARTH SCIENCE > PALEOCLIMATE > OCEAN/LAKE RECORDS > LAKE LEVELS; EARTH SCIENCE > PALEOCLIMATE > LAND RECORDS > SEDIMENTS; EARTH SCIENCE > PALEOCLIMATE > OCEAN/LAKE RECORDS > SEDIMENTS; EARTH SCIENCE > PALEOCLIMATE > OCEAN/LAKE RECORDS > VARVE DEPOSITS; EARTH SCIENCE > LAND SURFACE > EROSION/SEDIMENTATION > DEGRADATION; EARTH SCIENCE > LAND SURFACE > EROSION/SEDIMENTATION > SEDIMENT TRANSPORT; EARTH SCIENCE > CRYOSPHERE > GLACIERS/ICE SHEETS > GLACIER MASS BALANCE/ICE SHEET MASS BALANCE; EARTH SCIENCE > OCEANS > MARINE SEDIMENTS > SEDIMENT TRANSPORT; EARTH SCIENCE > OCEANS > MARINE SEDIMENTS > TURBIDITY; EARTH SCIENCE > LAND SURFACE > LAND TEMPERATURE > LAND SURFACE TEMPERATURE; EARTH SCIENCE > LAND SURFACE > EROSION/SEDIMENTATION > ENTRAINMENT; EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > GLACIERS/ICE SHEETS > GLACIERS; EARTH SCIENCE > CRYOSPHERE > GLACIERS/ICE SHEETS > GLACIERS; EARTH SCIENCE > LAND SURFACE > EROSION/SEDIMENTATION > SEDIMENTATION; EARTH SCIENCE > CRYOSPHERE > FROZEN GROUND > SOIL TEMPERATURE; EARTH SCIENCE > CRYOSPHERE > FROZEN GROUND > PERIGLACIAL PROCESSES; EARTH SCIENCE > LAND SURFACE > EROSION/SEDIMENTATION > SUSPENDED SOLIDS; IN SITU/LABORATORY INSTRUMENTS > SAMPLERS > GRABBERS/TRAPS/COLLECTORS > SEDIMENT TRAPS; IN SITU/LABORATORY INSTRUMENTS > CORERS > SEDIMENT CORERS; IN SITU/LABORATORY INSTRUMENTS > CONDUCTIVITY SENSORS > CONDUCTIVITY METERS; EARTH REMOTE SENSING INSTRUMENTS > PASSIVE REMOTE SENSING > PHOTON/OPTICAL DETECTORS > CAMERAS > CAMERAS; EARTH REMOTE SENSING INSTRUMENTS > PASSIVE REMOTE SENSING > PROFILERS/SOUNDERS > TEMPERATURE PROFILERS; IN SITU/LABORATORY INSTRUMENTS > RECORDERS/LOGGERS > TEMPERATURE LOGGERS; IN SITU/LABORATORY INSTRUMENTS > GAUGES > STREAM GAUGES; EARTH REMOTE SENSING INSTRUMENTS > PASSIVE REMOTE SENSING > POSITIONING/NAVIGATION > GPS > GPS > GLOBAL POSITIONING SYSTEM; EARTH REMOTE SENSING INSTRUMENTS > ACTIVE REMOTE SENSING > PROFILERS/SOUNDERS > ACOUSTIC SOUNDERS > ECHO SOUNDERS; IN SITU/LABORATORY INSTRUMENTS > PROBES > PROBES; IN SITU/LABORATORY INSTRUMENTS > CORERS > CORING DEVICES; IN SITU/LABORATORY INSTRUMENTS > PROBES > STEEL MEASURING TAPE; IN SITU/LABORATORY INSTRUMENTS > CURRENT/WIND METERS > CURRENT METERS; MANNED FIELD STATION; HOURLY TO DAILY; DAILY TO WEEKLY; ANNUAL; 1 MINUTE TO 1 HOUR; MONTHLY TO ANNUAL; WEEKLY TO MONTHLY; inlandWaters; oceans; environment; climatologyMeteorologyAtmosphere; Arctic; Jan Mayen; Linnévatnet; Svalbard; glacier; Ice Sheet; North Atlantic; Spitsbergen
• Online Access: https://doi.org/10.18739/A2X610

Abstract: The rhythmically laminated sediments found in proglacial Linnévatnet in western Spitsbergen, Svalbard may be suitable for the reconstruction of paleoenvironmental conditions such as temperature, precipitation, and glacier mass balance. In order to use these sediments as a proxy for past environmental change, however, we must understand which modern environmental factors contribute to Linnévatnet’s patterned sediments. The goal of this study is to further that understanding by estimating the rate of sedimentation in Linnévatnet’s distal basin over a period for which climatic conditions are well constrained (1963-2009). Average estimates for the sedimentation rate were calculated using concentrations of fallout 137-Cs in two sediment cores (GC09-1 and GC09-2). Results from both coresindicate average sedimentation rates of 0.49 and 0.64 mm/yr, respectively, over the last half-century. The estimated sedimentation rates presented here are similar, but typically lower, than those put forth by previous workers who used varve counts, paleomagnetic methods, and sediment traps to quantify sedimentation rates over the same period. The evidence from this study for low sedimentation rates in Linnévatnet’s distal basin (<1mm/yr) implies that some recent years are poorly recorded by the archetypical annual silt-clay couplet, or varve. In the future, annual sedimentation patterns may be more accurately resolved by comparing varve counts to 137-Cs profiles that have been measured on the same core or series of cores.