Brad Danielson
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View article: Evolving ice fraction in the shallow firn layer of Devon Ice Cap, Canada, between 2012 and 2022
Evolving ice fraction in the shallow firn layer of Devon Ice Cap, Canada, between 2012 and 2022 Open
Firn can store glacial meltwater and delay contribution to sea level rise, but ice layers and ice slabs within the shallow firn layer can impede the downward percolation of melt. Here we report firn conditions along a transect on southwest…
View article: Evaluation of a drone to map and monitor critical habitat features for the Sage Thrasher (<i>Oreoscoptes montanus</i>)
Evaluation of a drone to map and monitor critical habitat features for the Sage Thrasher (<i>Oreoscoptes montanus</i>) Open
Habitat destruction is the leading cause of global biodiversity loss. To recover endangered species requires knowing the habitat elements that are essential to their survival, defined as critical habitat. This paper demonstrates the applic…
View article: Biogeochemical evolution of ponded meltwater in a High Arctic subglacial tunnel
Biogeochemical evolution of ponded meltwater in a High Arctic subglacial tunnel Open
Subglacial environments comprise ∼10 % of Earth's land surface, host active microbial ecosystems, and are important components of global biogeochemical cycles. However, the broadly inaccessible nature of subglacial systems has left them va…
View article: Comment on tc-2022-240
Comment on tc-2022-240 Open
Abstract. Subglacial environments comprise ~10 % of Earth’s land surface, host active microbial ecosystems, and are important components of global biogeochemical cycles. However, the broadly inaccessible nature of subglaci…
View article: Biogeochemical evolution of ponded meltwater in a High Arctic subglacial tunnel
Biogeochemical evolution of ponded meltwater in a High Arctic subglacial tunnel Open
Subglacial environments comprise ~10 % of Earth’s land surface, host active microbial ecosystems, and are important components of global biogeochemical cycles. However, the broadly inaccessible nature of subglacial systems has left them va…
View article: Supplementary material to "Biogeochemical evolution of ponded meltwater in a High Arctic subglacial tunnel"
Supplementary material to "Biogeochemical evolution of ponded meltwater in a High Arctic subglacial tunnel" Open
Methods S1: Water isotope fractionation modelA model was developed using the principles of isotopic fractionation to estimate the isotopic composition of incremental ice, incremental vapor, and residual water as a hydraulically isolated wa…
View article: Biogeochemical evolution of ponded meltwater in a High Arctic subglacial tunnel
Biogeochemical evolution of ponded meltwater in a High Arctic subglacial tunnel Open
Geochemical data for the paper "Biogeochemical evolution of ponded meltwater in a High Arctic subglacial tunnel"
View article: Basal thermal regime affects the biogeochemistry of subglacial systems
Basal thermal regime affects the biogeochemistry of subglacial systems Open
Ice formed in the subglacial environment can contain some of the highest concentrations of solutes, nutrients, and microbes found in glacier systems, which can be released to downstream freshwater and marine ecosystems and glacier forefiel…
View article: Basal thermal regime affects the biogeochemistry of subglacial systems
Basal thermal regime affects the biogeochemistry of subglacial systems Open
Ice formed in the subglacial environment can contain some of the highest concentrations of solutes, nutrients, and microbes found in glacier systems. Upon glacial melt, these materials are released to downstream freshwater and marine ecosy…