A significant consequence of Typhoon Morakot in August 2009 was the production vast volumes driftwood Pacific Asia. We have quantified flux this coarse woody debris (CWD) to oceans from typhoon‐triggered landslides Taiwan, where made landfall, by combining remote sensing (using FORMOSAT‐2 imagery and aerial photography), analysis forest biomass, field observations. total 3.8–8.4 Tg CWD transported oceans, carrying 1.8–4.0 organic carbon. In addition local effects on marine coastal...

Abstract. Geological sequestration of atmospheric carbon dioxide (CO2) can be achieved by the erosion organic (OC) from terrestrial biosphere and its burial in long-lived marine sediments. Rivers on mountain islands Oceania western Pacific have very high rates OC export to ocean, yet preservation offshore remains poorly constrained. Here we use content (Corg, %), radiocarbon (Δ 14Corg) stable isotope (δ13Corg) composition sediments Taiwan assess fate OC, using surface, sub-surface Holocene...

Rapid erosion in mountain forests results high rates of biospheric particulate organic carbon (POC) export by rivers, which can contribute to atmospheric dioxide drawdown.However, coarse POC (CPOC) carried particles >~1 mm is rarely quantified.In a forested pre-Alpine catchment, we measured CPOC transport and found that they increase more rapidly with water discharge than fine (<1 mm) dissolved (DOC).As result, decadal estimates yield 12.3 ± 1.9 t C km -2 yr -1 are higher for DOC, even when...

Elephant Moraine (EET) 96029 is a CM carbonaceous chondrite regolith breccia with evidence for unusually mild aqueous alteration, later phase of heating and terrestrial weathering. The presence phyllosilicates carbonates within chondrules the fine-grained matrix indicates that this meteorite was aqueously altered in its parent body. Features showing water-mediated processing arrested at very early stage include low magnesium/iron ratio, whose mesostasis contains glass and/or quench...

Enhanced climate warming affecting the Arctic region could have a dramatic impact on terrigenous organic carbon (terrOC) stored in Eurasian permafrost and increase amount of OC remobilized to shelves. An improved understanding fate this soil is essential for better consequences global cycle. In study, glycerol dialkyl tetraethers (GDGTs) bacteriohopanepolyols (BHPs) surface sediments along 500 km cross shelf transect from mouth Kolyma River middle vast East Siberian Sea were analysed assess...

Graphite forms the endpoint for organic carbon metamorphism; it is extremely resilient to physical, biological and chemical degradation. Carbonaceous materials (CM) contained within sediments, collected across Taiwan from Gaoping submarine canyon, were analyzed using Raman spectroscopy determine crystallinity. This allowed erosional orogenic movements of petrogenic (OCpetro) during Taiwanese orogeny be deduced. After automatically fitting classifying spectra, distribution four groups CM...

Volumetrically, turbidity currents are the prime suppliers of sediment to deep sea, and conveyors organic carbon from terrestrial biosphere submarine shelf into marine depositional basins. They result complex processes erosion, transport deposition that can be difficult study in detail. Here we present data Gaoping canyon system, off SW Taiwan, which was perturbed 2009 by addition flood deposits following Typhoon Morakot sampled gravity coring less than 2 months after event. We use different...

Abstract. Siberian permafrost contains a globally significant pool of organic carbon (OC) that is vulnerable to enhanced warming and subsequent release into the contemporary cycle. OC by both fluvial coastal erosion has been reported in region, but behaviour this material Arctic Ocean insufficiently understood. The balance between deposition degradation on East Shelf (ESAS) influences climate–carbon cycle feedback area. In study we couple measurements glycerol dialkyl tetraethers (GDGTs)...

Glacier retreat in northern latitudes exposes new landscapes that may develop soils and ecosystems, which turn sequester carbon serve as a negative climate change feedback. Proglacial soil development landscape evolution were investigated using transects from three high-latitude glacial systems (Tarfala, Sweden; Vatnajökull, Iceland; Zackenberg, Greenland). Soil samples analysed for organic (OC) concentration, bacteriohopanepolyol biomarkers (BHPs, membrane lipids trace major microbial...

The CM carbonaceous chondrites have all been aqueously altered, and some of them were subsequently heated in a parent body environment. Here we sought to understand the impact short duration heating on highly altered through laboratory experiments Allan Hills (ALH) 83100. Unheated ALH 83100 contains 83 volume per cent serpentine within fine-grained matrix chondrules. also hosts grains calcite dolomite, which are often intergrown with tochilinite, Fe(Ni) sulphides (pyrrhotite, pentlandite),...

Abstract. Mobilisation of terrestrial organic carbon (terrOC) from permafrost environments in eastern Siberia has the potential to deliver significant amounts Arctic Ocean, via both fluvial and coastal erosion. Eroded terrOC can be degraded during offshore transport or deposited across wide East Siberian Shelf (ESAS). Most studies on ESAS have concentrated solvent-extractable matter, but this represents only a small proportion total load. In study we used pyrolysis–gas chromatography–mass...

Increasing attention is being paid to the carbon sequestration and storage services provided by coastal blue ecosystems such as saltmarshes. Sites restored managed realignment, where existing sea walls are breached reinstate tidal inundation land behind, have considerable potential accumulate through deposition of sediment brought in tide burial vegetation site. While this has been recognised, it not yet a common motivating factor for saltmarsh restoration, partly due uncertainties about...

Raman spectroscopy can be used to assess the structure of naturally occurring carbonaceous materials (CM), which exist in a wide range crystal structures. The sources these geological and environmental include rocks, soils, river sediments, marine sediment cores, all contain material ranging from highly crystalline graphite amorphous-like organic compounds. In order fully characterize sample its intrinsic heterogeneity, several spectra must collected analyzed precise repeatable manner. Here,...

Abstract. The Siberian Arctic contains a globally significant pool of organic carbon (OC) vulnerable to enhanced warming and subsequent release by both fluvial coastal erosion processes. However, the rate release, its behaviour in Ocean vulnerability remineralisation is poorly understood. Here we combine new measurements microbial biohopanoids including adenosylhopane, lipid associated with soil communities, published glycerol dialkyl tetraethers (GDGTs) bulk δ13C improve knowledge fate OC...

Abstract. Warming-induced erosion of permafrost from Eastern Siberia mobilises large amounts organic carbon and delivers it to the East Siberian Arctic Shelf (ESAS). In this study Raman spectroscopy carbonaceous material (CM) was used characterise, identify track most recalcitrant fraction load: 1463 spectra were obtained surface sediments collected across ESAS automatically analysed for their peaks. Spectra classified by peak areas widths into disordered, intermediate, mildly graphitised...

Abstract. The Siberian Arctic contains a globally significant pool of organic carbon (OC) vulnerable to enhanced warming and subsequent release by both fluvial coastal erosion processes. However, the rate release, its behaviour in Ocean vulnerability remineralisation is poorly understood. Here we combine new measurements microbial biohopanoids including adenosylhopane, lipid associated with soil communities, published glycerol dialkyl tetraether (GDGTs) bulk δ13C 5 improve knowledge fate OC...

Bacteriohopanepolyols (BHPs) are a diverse class of bacterial lipids that hold promise as biomarkers specific microbes, microbial processes, and environmental conditions. BHPs have been characterized in variety terrestrial aquatic environments, but less is known about their distribution abundance extreme systems. In the present study, samples taken from water column upper sediments hyper-euxinic, meromictic Mahoney Lake (Canada) were analyzed for BHPs. Analyses show distinct BHP...

Methanotrophic bacteria (MB) are an important group of microorganisms, involved in the greenhouse gas (GHG) cycles. They responsible for utilization methane, one main GHGs, which is released large amounts (via biogenic and abiogenic processes) during coal formation. This study aimed to determine factors affecting distribution MB two lignite-bearing series Turów Bełchatów basins. Distribution lignite profiles was studied using methanotroph-specific lipid biomarkers such as...

Abstract Increasing attention is being paid to the carbon sequestration and storage services provided by coastal blue ecosystems such as saltmarshes. Sites restored managed realignment, where existing sea walls are breached reinstate tidal inundation land behind, have considerable potential accumulate through deposition of sediment brought in tide burial vegetation site. While this has been recognised, it not yet a common motivating factor for saltmarsh restoration, partly due uncertainties...

Abstract. Geological sequestration of atmospheric carbon dioxide (CO2) can be achieved by the erosion organic (OC) from terrestrial biosphere and its burial in long-lived marine sediments. Rivers on mountain islands Oceania western Pacific have very high rates OC export to ocean, yet preservation offshore remains poorly constrained. Here we use content (Corg, %), radiocarbon (Δ14Corg) stable isotope (δ13Corg) composition sediments Taiwan assess fate OC. We account for rock-derived fossil...