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  • +54-03/57PC; +54-03/64PC; +54-03/67PC; +54-03/68PC; AGE; British Geological Survey; Calculated; COMPCORE; Composite Core; Confidence interval lower limit; Confidence interval upper limit; Declination; Holocene; Inclination; lake sediments; Lake Windermere, United Kingdom; Magnetic; Palaeomagnetic; Paleomagnetic; Paleosecular variation; PC; Piston corer; Principal component analyses (PCA); Relative paleointensity proxy; U-channel; Windermere; WINPSV-12K  (1)
  • archaeological case study  (1)
Document type
Keywords
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Years
  • 1
    Publication Date: 2023-01-30
    Description: Inclination, declination, and relative palaeointensity calculated as a composite (WINPSV-12K) of four sediment cores (+54-03/57PC, +54-03/64PC, +54-03/67PC, +54-03/68PC) from Windermere, UK, spanning the Holocene. The inclination and declination are reliable, but the RPI is not reliable and should not be used in publications. It is made available for those who wish to plot it anyway. For each variable we have included the calculated values and the 5% and 95% confidence envelope limits. Values are calaculated for every 50 year timestep.
    Keywords: +54-03/57PC; +54-03/64PC; +54-03/67PC; +54-03/68PC; AGE; British Geological Survey; Calculated; COMPCORE; Composite Core; Confidence interval lower limit; Confidence interval upper limit; Declination; Holocene; Inclination; lake sediments; Lake Windermere, United Kingdom; Magnetic; Palaeomagnetic; Paleomagnetic; Paleosecular variation; PC; Piston corer; Principal component analyses (PCA); Relative paleointensity proxy; U-channel; Windermere; WINPSV-12K
    Type: Dataset
    Format: text/tab-separated-values, 2106 data points
    Location Call Number Limitation Availability
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  • 2
    ISSN: 1573-0581
    Keywords: Chirp profilers ; high resolution images ; archaeological case study
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Chirp sub-bottom profilers produce high-resolution images of the near-surface. An attribute of the sea-bed reflection in chirp data are fluctuations in polarity between adjacent traces. Two models are proposed and presented to explain this: the first incorporates changes in an acoustic impedance gradient at the sea bed; the second uses changes in the thickness of the uppermost sediment layer. Mixing of adjacent traces produces a consistent polarity for the sea-bed reflector. Reflection coefficients are calculated, using amplitude information derived from single-traces, and polarity information from trace mixing, with application to a marine archaeological case study. The reflection coefficient calculated for the top of a buried 18th century wooden wreck is -0.26.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
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