Dominik Hülse

Dominik Hülse
University of California, Riverside | UCR · Department of Earth Sciences

PhD
Simons Postdoctoral Fellow

About

20
Publications
2,116
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95
Citations

Publications

Publications (20)
Article
Full-text available
The Organic Matter ENabled SEDiment model (OMEN-SED) is a one-dimensional, analytical reaction–transport model for early diagenesis in marine sediments. It explicitly resolves organic matter (OM) degradation and associated biogeochemical terminal electron acceptor, reduced species and nutrient dynamics in porous media under steady-state conditions....
Article
Full-text available
Extreme warming at the end-Permian induced profound changes in marine biogeochemical cycling and animal habitability, leading to the largest metazoan extinction in Earth’s history. However, a causal mechanism for the extinction that is consistent with various proxy records of geochemical conditions through the interval has yet to be determined. Her...
Article
Full-text available
The preservation of calcium carbonate in marine sediments is central to controlling the alkalinity balance of the ocean and, hence, the ocean–atmosphere partitioning of CO2. To successfully address carbon cycle–climate dynamics on geologic (≫1 kyr) timescales, Earth system models then require an appropriate representation of the primary controls on...
Article
Full-text available
The coupled biogeochemical cycles of iron and sulfur are central to the long-term biogeochemical evolution of Earth's oceans. For instance, before the development of a persistently oxygenated deep ocean, the ocean interior likely alternated between states buffered by reduced sulfur (“euxinic”) and buffered by reduced iron (“ferruginous”), with impo...
Preprint
Full-text available
The preservation of calcium carbonate in marine sediments is central to controlling the alkalinity balance of the ocean and hence the ocean-atmosphere partitioning of CO2. To successfully address carbon cycle-climate dynamics on geologic (>> 1 kyr) time-scales, Earth system models then require an appropriate representation of the primary controls o...
Preprint
Full-text available
OMEN-SED is a one-dimensional, analytical reaction-transport model for early diagenesis in marine sediments. It explicitly resolves organic matter (OM) degradation and associated biogeochemical terminal electron acceptor, reduced species and nutrient dynamics in porous media under steady state conditions. OMEN-SED has been specifically designed for...
Preprint
Full-text available
The coupled biogeochemical cycles of iron and sulphur are central to the long-term biogeochemical evolution of Earth's oceans. For instance, before the development of a persistently oxygenated deep ocean, the ocean interior likely alternated between states buffered by reduced sulphur ('euxinic') vs. buffered by reduced iron ('ferruginous'), with im...
Preprint
Full-text available
Extreme warming at the end-Permian induced profound changes in marine biogeochemical cycling and animal habitability, leading to the largest extinction in Earth's history. However, a causal mechanism for the extinction that explains the different proxy evidence has yet to be found. By combining recent modeling developments with global and local red...
Article
Full-text available
Past occurrences of widespread and severe anoxia in the ocean have frequently been associated with abundant geological evidence for free hydrogen sulfide (H 2 S) in the water column, so-called euxinic conditions. Free H 2 S may react with, and modify, the chemical structure of organic matter settling through the water column and in marine sediments...
Article
Full-text available
We present the first version of OMEN-SED (Organic Matter ENabled SEDiment model), a new, one-dimensional analytical early diagenetic model resolving organic matter cycling and the associated biogeochemical dynamics in marine sediments designed to be coupled to Earth system models. OMEN-SED explicitly describes organic matter (OM) cycling and the as...
Article
Full-text available
We present the first version of OMEN-SED (Organic Matter ENabled SEDiment model), a new, one-dimensional analytical early diagenetic model resolving organic matter cycling and associated biogeochemical dynamics in marine sediments designed to be coupled to Earth system models. OMEN-SED explicitly describes organic matter (OM) cycling as well as ass...
Article
On geological time-scales, the production and degree of recycling of biogenic carbon in the marine realm and ultimately its removal to sediments, exerts a dominant control on atmospheric CO2 and hence variability in climate. This is a highly complex system involving a myriad of inter-connected biological, chemical, and physical processes. For this...
Presentation
Full-text available
The ocean-sediment system, as the biggest carbon reservoir in the Earth’s carbon cycle, plays a crucial role in regulating atmospheric carbon dioxide concentrations and climate. Therefore, it is essential to constrain the importance of marine carbon cycle feedbacks on global warming and ocean acidification. Arguably, the most important single compo...
Article
Full-text available
We report on several generic implementations for uni- variate polynomial gcd computation over the integers and, in particular, over algebraic extensions. Our benchmarks show that the generic implementation compares favorably to well established libraries. Even for the integer case our implementation is competitive to the one provided by the NTL, wh...

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