P L Ascough

Biographic Data

ID4131420
NAMEP L Ascough
GIVEN NAMESP L
FAMILY NAMEAscough
SIGNATUREASCOUGH P L
AFFILIATIONSSUERC, UK
VERIFIEDNo
TOTAL WORKS9
TOTAL CITATIONS135
WORKS AS AUTHOR9
WORKS AS EDITOR0
FIRST PUBLICATION YEAR2006
LATEST PUBLICATION YEAR2019
H-INDEX7

  • Radiocarbon Analysis of Methane at the Nerc Radiocarbon Facility (East Kilbride)

    Open AccessM H Garnett, C Murray et al.ARTICLERadiocarbon2019Cited by: 5References: 18

    Methane is the second most important anthropogenically produced greenhouse gas, and radiocarbon ( 14 C) analysis is extremely valuable in identifying its age and source in the environment. At the NERC Radiocarbon Facility (East Kilbride, UK) we have developed expertise in analysis of methane 14 C concentration and methodological approaches to field sampling over the past 20 years. This has opened a wide range of applications, which have mainly fo…

  • Advances in the Radiocarbon Analysis of Carbon dioxide at the Nerc Radiocarbon Facility (East Kilbride) using Molecular sieve Cartridges

    Open AccessM H Garnett, Josephine-Anne Newton et al.ARTICLERadiocarbon2019Cited by: 3References: 19

    Radiocarbon ( 14 C) analysis of carbon dioxide (CO 2 ) provides unique information on the age, turnover and source of this important greenhouse gas, raising the prospect of novel scientific investigations into a range of natural and anthropogenic processes. To achieve these measurements, cartridges containing zeolite molecular sieves are a reliable and convenient method for collecting CO 2 samples. At the NERC Radiocarbon Facility (East Kilbride)…

  • An Icelandic freshwater radiocarbon reservoir effect

    Open AccessPhilippa Ascough, P L Ascough et al.ARTICLEThe Holocene2011Cited by: 18References: 3

    A freshwater radiocarbon ( 14 C) reservoir effect (FRE) is a 14 C age offset between the atmospheric and freshwater carbon reservoirs. FREs can be on the order of 10 000 14 C yr in extreme examples and are a crucial consideration for 14 C dating of palaeoenvironmental and archaeological samples. Correction for a FRE may be possible, provided the FRE and the proportion of FRE-affected carbon within a sample can be accurately quantified. However, a…

  • Examining the Inherent Variability in ΔR

    Open AccessN Russell, G T Cook et al.ARTICLERadiocarbon2011Cited by: 23References: 23

    Currently, there is significant ongoing research into the temporal and spatial variability of marine radiocarbon reservoir effects (MREs) through quantification of ΔR values. In turn, MRE studies often use large changes in ΔR values as proxies for changes in ocean circulation. ΔR values are published in a variety of formats with variations in how the errors on these values are calculated, making it difficult to identify trends or to compare value…

  • Hydropyrolysis

    Open AccessPhilippa Ascough, P L Ascough et al.ARTICLERadiocarbon2010Cited by: 15References: 44

    Charcoal is the result of natural and anthropogenic burning events, when biomass is exposed to elevated temperatures under conditions of restricted oxygen. This process produces a range of materials, collectively known as pyrogenic carbon, the most inert fraction of which is known as black carbon (BC). BC degrades extremely slowly and is resistant to diagenetic alteration involving the addition of exogenous carbon, making it a useful target subst…

  • C AMS at Suerc

    Open AccessP Naysmith, G T Cook et al.ARTICLERadiocarbon2010Cited by: 15References: 5

    In 2003, a National Electrostatics Corporation (NEC) 5MV tandem accelerator mass spectrometer was installed at SUERC, providing the radiocarbon laboratory with 14 C measurements to 4–5‰ repeatability. In 2007, a 250kV single-stage accelerator mass spectrometer (SSAMS) was added to provide additional 14 C capability and is now the preferred system for 14 C analysis. Changes to the technology and to our operations are evident in our copious quality…

  • Temporal and Spatial Variations in Freshwater 14 C Reservoir Effects

    Open AccessPhilippa Ascough, P L Ascough et al.ARTICLERadiocarbon2010Cited by: 27References: 48

    Lake Mývatn is an interior highland lake in northern Iceland that forms a unique ecosystem of international scientific importance and is surrounded by a landscape rich in archaeological and paleoenvironmental sites. A significant freshwater reservoir effect (FRE) has been identified in carbon from the lake at some Viking (about AD 870–1000) archaeological sites in the wider region (Mývatnssveit). Previous accelerator mass spectrometry (AMS) measu…

  • Spatial Variation in the Marine Radiocarbon Reservoir Effect Throughout the Scottish Post-Roman to Late Medieval Period

    Open AccessN Russell, G T Cook et al.ARTICLERadiocarbon2010Cited by: 13References: 34

    The marine radiocarbon reservoir effect (MRE) occurs as a spatially and temporally dependent variable owing to localized changes in oceanic water composition. This study investigates ΔR values (deviations from the global average MRE whose ΔR = 0) during the period 500–1350 BP for the east coast of Scotland, where a complex estuarine system exists that drains into the semi-enclosed North Sea basin. Due to the availability of suitable archaeologica…

  • Variability in North Atlantic marine radiocarbon reservoir effects at c. AD 1000

    Open AccessPhilippa Ascough, P L Ascough et al.ARTICLEThe Holocene2006Cited by: 16References: 5

    14 C age measurements made on samples from three archaeological sites located on North Atlantic coasts were used to investigate the marine reservoir effect (MRE) at c.AD 1000. This is an important period within human cultural and palaeoenvironmental research as it is a time when Norse expansion to the North Atlantic islands occurred, during what appears to be a period of ameliorating climatic conditions. This makes improved chronological precisio…