End-member Modelling Analysis of Grain Size Data (EMMA)
The grain size distributions of sediment deposits routed across the Earth surface contain valuable information about the source area they are derived from, the transport processes that moved them and the transport pathway. These information about the transport regime are however obscured when sediments become mixed during deposition. End-member modelling analysis or EMMA is a statistical approach to unmix the underlying transport regimes. The GNU R package EMMAgeo (GitHub) provides a coherent framework for deterministic and robust end-member modelling. For further information see the EMMAgeo website .
Grain Size Data Import and Analysis Toolbox
The GNU R grainsize package (GitHub) for the free and open software GNU R offers a number of functions tailored to the needs of the sediment laboratory. It allows importing measurement data from the Horiba LA950 and CamSizerXT devices, and contains plotting functions, tools to interpolate between grain size classes and grain size scale conversions. Thus, it is the quasi standard to work with high resolution grain-size data in GNU R. Furthermore, the imported data sets can be analysed and evaluated with additional packages, such as rysgran or G2Sd.
2017
- Rahaman, W., Wittmann, H., von Blanckenburg, F. (2017): Denudation rates and the degree of chemical weathering in the Ganga River basin from ratios of meteoric cosmogenic 10Be to stable 9Be. - Earth and Planetary Science Letters, 469, pp. 156-169. DOI: http://doi.org/10.1016/j.epsl.2017.04.001
- Wittmann, H., von Blanckenburg, F., Mohtadi, M., Christl, M., Bernhardt, A. (2017): The competition between coastal trace metal fluxes and oceanic mixing from the 10Be/9Be ratio: Implications for sedimentary records . - Geophysical Research Letters, 44, 16, pp. 8443-8452. DOI: http://doi.org/10.1002/2017GL074259
- Roettig, C., Kolb, T., Wolf, D., Baumgart, P., Richter, C., Schleicher, A. M., Zöller, L., Faust, D. (2017): Complexity of Quaternary aeolian dynamics (Canary Islands). - Palaeogeography Palaeoclimatology Palaeoecology, 472, pp. 146-162. DOI: http://doi.org/10.1016/j.palaeo.2017.01.039
- Brehme, M., Blöcher, G., Regenspurg, S., Milsch, H., Petrauskas, S., Petrauskas, R., Wolfgramm, M., Huenges, E. (2017): Soft stimulation for solving injectivity problems in a geothermal reservoir, (Proceedings) , 42nd Workshop on Geothermal Reservoir Engineering (Stanford, USA 2017).
2016
- Dietze, M., Dietze, E., Lomax, J., Fuchs, M., Kleber, A., Wells, S. G. (2016): Environmental history recorded in aeolian deposits under stone pavements, Mojave Desert, USA. - Quaternary Research, 85, 1, pp. 4-16. DOI: http://doi.org/10.1016/j.yqres.2015.11.007
2015
- Fuchs, M., Dietze, M., Al-Qudah, K., Lomax, J. (2015): Dating desert pavements – First results from a challenging environmental archive. - Quaternary Geochronology, 30, pp. 342-349. DOI: http://doi.org/10.1016/j.quageo.2015.01.001
- Struck, M., Andermann, C., Hovius, N., Korup, O., Turowski, J., Bista, R., Pandit, H. P., Dahal, R. K. (2015): Monsoonal hillslope processes determine grain size-specific suspended sediment fluxes in a trans-Himalayan river. - Geophysical Research Letters, 42, 7, pp. 2302-2308. DOI: http://doi.org/10.1002/2015GL063360