Proxy Bunker Online Series Analyses And

It can be potentially used within existing age mod- eling structures to bring forth a reliable and consistent frame- work for proxy record estimation. 1 Introduction Empirical evidence of past climatic conditions are funda- mentally based on reliably constructed proxy records.

We present a generic Bayesian framework to estimate proxy records along with.

We provide analytical expressions for the posterior proxy probability.

Our analysis reveals interrelations between the uncertainty of the proxy.

For the Lonar lake proxies, we show that, rather than the age uncertainties.

Depth-spanning weight functions (DWFs).

Radiocarbon calibration curve representing the mean (red) and 2 standard deviations (blue) of the distribution P (rt).

All uncertainty bounds correspond to 95 confidence.

Color online.) UTh-dated synthetic stalagmite.

Legend as in Fig.

The straight line of slope 1 used in place of a calibration curve.

A. The straight line of slope one used in place of a calibration curve.

Inset: The post-bomb calibration curve that was used.

B. The RM age model for the Lonar lake sediment core.

For details of the radiocarbon age-depth measurements, c.f., B.

C, E. The groundwater inflow (Ca area) and surface erosion (Al area) proxies as measured along the depth of the core.

D, F. The corresponding proxy record estimates as obtained using the Bayesian approach detailed in the text.

D; kcps denotes kilo counts per seconds.

Color online.) Comparison of results with OxCal.

The proxy records estimated by the present approach (red, dotted) compared to proxy records obtained by using an OxCal P-sequence age model (dark gray) for the groundwater inflow (Ca-area, a) and surface erosion (Al-area, b) proxies from the Lonar lake.

The legend for the confidence bounds to the Bayesian proxy estimate is the same as in Fig.

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Estimation of sedimentary proxy records together with associated uncertainty B.

Processes Geophys.

Discuss.: 24 June 2014 Revised: 10 September 2014 Accepted: 3 October 2014 Published: 11 November 2014 Abstract.

Sedimentary proxy records constitute a signicant portion of the recorded evidence that allows us to in vesti- gate paleoclimatic conditions and variability.

W e present a generic Bayesian framework to estimate proxy records along with their associated uncertainty, start- ing with the radiometric agedepth and proxydepth mea- surements, and a radiometric calibration curve if required.

W e illustrate our method using two synthetic data sets and then use it to construct the proxy records for groundwater inow and surface erosion from Lonar lake in central India.

Our analysis reveals interrelations between the uncertainty of the proxy record over time and the variance of proxies along the depth of the archive.

Proxy Bunker Online Series Analyses And

W e represent the proxy records as probability distributions on a precise, error-free timescale that makes further time series analyses and inter- comparisons of proxies relatively simple and clear.

Our ap- proach provides a coherent understanding of age uncertain- ties within sedimentary proxy records that involv e radiomet- ric dating.

It can be potentially used within existing age mod- eling structures to bring forth a reliable and consistent frame- work for proxy record estimation.

Introduction Empirical evidence of past climatic conditions are funda- mentally based on reliably constructed proxy records.