OCTOPUS database (v.2)

Abstract

Abstract. OCTOPUS v.2 is an Open Geospatial Consortium (OGC) compliant web-enabled database that allows users to visualise, query, and download cosmogenic radionuclide, luminescence, and radiocarbon ages and denudation rates associated with erosional landscapes, Quaternary depositional landforms, and archaeological records, along with ancillary geospatial (vector and raster) data layers. The database follows the FAIR (Findability, Accessibility, Interoperability, and Reuse) data principles and is based on open-source software deployed on the Google Cloud Platform. Data stored in the database can be accessed via a custom-built web interface and via desktop geographic information system (GIS) applications that support OGC data access protocols. OCTOPUS v.2 hosts five major data collections. CRN Denudation and ExpAge consist of published cosmogenic 10Be and 26Al measurements in modern fluvial sediment and glacial samples respectively. Both collections have a global extent; however, in addition to geospatial vector layers, CRN Denudation also incorporates raster layers, including a digital elevation model, gradient raster, flow direction and flow accumulation rasters, atmospheric pressure raster, and CRN production scaling and topographic shielding factor rasters. SahulSed consists of published optically stimulated luminescence (OSL) and thermoluminescence (TL) ages for fluvial, aeolian, and lacustrine sedimentary records across the Australian mainland and Tasmania. SahulArch consists of published OSL, TL, and radiocarbon ages for archaeological records, and FosSahul consists of published late-Quaternary records of direct and indirect non-human vertebrate (mega)fauna fossil ages that have been systematically quality rated. Supporting data are comprehensive and include bibliographic, contextual, and sample-preparation- and measurement-related information. In the case of cosmogenic radionuclide data, OCTOPUS also includes all necessary information and input files for the recalculation of denudation rates using the open-source program CAIRN. OCTOPUS v.2 and its associated data curation framework allow for valuable legacy data to be harnessed that would otherwise be lost to the research community. The database can be accessed at https://octopusdata.org (last access: 1 July 2022). The individual data collections can also be accessed via their respective digital object identifiers (DOIs) (see Table 1).

New perspectives on Australian hydroclimate and population dynamics during Last Glacial Maximum and terminal Pleistocene

“…A Kernel Density Estimation (KDE) was determined from optically stimulated luminescence (OSL) and thermo luminescence (TL) ages from lacustrine beach and shoreline ages and uvial overbank and channel ages was from the two largest river systems in Australia, the Murray Darling Basin and the Lake Eyre Basin. Discontinuous archive ages were accessed from the OCTOPUS database v.2 (https://octopusdata.org/) (72). Continuous lacustrine proxy records (n = 35) were analyzed for the period 22-8ka using the same methodology as Cadd et al (5).…”

Natural Denudation Versus Anthropogenically Accelerated Erosion in Central Brazil: A Confrontation of Time and Space Scales

“…Bridging these very different time spans, the production of cosmogenic nuclides in the upper few meters of the Earth's surface rocks provides a powerful tool for quantifying denudation rates that integrate the last 10 2 -10 5 years (Gosse & Phillips, 2001;von Blanckenburg, 2005). In river catchments, this technique is <30-years old, but the global database is growing and covers more and more different climatic and geodynamic contexts (Codilean et al, 2018(Codilean et al, , 2022Portenga & Bierman, 2011). For the period 1995-2021, 4,425 measurements of in situ produced 10 Be concentrations are included in the Octopus database (Codilean & Munack, 2021), leading to a worldwide median value of about 70 mm kyr −1 , and ranging from a few mm kyr −1 to a few mm yr −1 as in highly dynamic settings like Taiwan (e.g., Derrieux et al, 2014).…”

Impact of Quaternary Glaciations on Denudation Rates in North Pamir—Tian Shan Inferred From Cosmogenic 10Be and Low‐Temperature Thermochronology

“…Cosmogenic 10 Be produced in quartz has proven to be the best suited technique for studying the denudation of Earth's continental topography over millennial timescales (Schaefer et al, 2022). Indeed, 10 Be-based denudation rates have now been determined in more than 4,000 river basins-mostly from mountain landscapes-providing us with a large inventory of denudation rate estimates (Codilean et al, 2018(Codilean et al, , 2022. The concentration of 10 Be nuclides in river sediments is proportional to their exposure age, with the highest 10 Be concentrations reflecting longer exposure time and, consequently, slower denudation (Granger & Schaller, 2014;Schaefer et al, 2022).…”

“…Atmospheric pressure was calculated via interpolation from the NCEP2 reanalysis data (Compo et al, 2011). For consistency with the denudation rates compiled in the OCTOPUS database (Codilean et al, 2018(Codilean et al, , 2022, we applied topographic shielding corrections to our data. The latter was calculated from the same DEM using the method of Codilean (2006) with Δθ = 8° and Δϕ = 5°.…”