Zobrazeno 1 - 10
of 2 671
pro vyhledávání: '"L Wacker"'
Publikováno v:
Climate of the Past, Vol 17, Pp 2165-2177 (2021)
Rapid and continuous analysis of radiocarbon (14C) concentration in carbonate samples at spatial resolution down to 100 µm has been made possible with the new LA-AMS (laser ablation accelerator mass spectrometry) technique. This novel approach can p
Externí odkaz:
https://doaj.org/article/e52306f809c54436bfe6ec9684a3d535
Publikováno v:
Biogeosciences, Vol 18, Pp 3539-3564 (2021)
The African baobab, Adansonia digitata L., has great paleoclimatological potential because of its wide distributional range and millennial length life span. However, dendroclimatological approaches are hampered by dating uncertainties due to its uniq
Externí odkaz:
https://doaj.org/article/a2e34303f13e438987e881291c9ae64a
Publikováno v:
Biogeosciences, Vol 18, Pp 2241-2258 (2021)
Thermokarst lakes play an important role in permafrost environments by warming and insulating the underlying permafrost. As a result, thaw bulbs of unfrozen ground (taliks) are formed. Since these taliks remain perennially thawed, they are zones of i
Externí odkaz:
https://doaj.org/article/b2f8c077f8e64baa8fcde4f457b4701f
Autor:
Maicon Landim-Vieira, Matthew C Childers, Amanda L Wacker, Michelle Rodriquez Garcia, Huan He, Rakesh Singh, Elizabeth A Brundage, Jamie R Johnston, Bryan A Whitson, P Bryant Chase, Paul ML Janssen, Michael Regnier, Brandon J Biesiadecki, J Renato Pinto, Michelle S Parvatiyar
Publikováno v:
eLife, Vol 11 (2022)
Phosphorylation and acetylation of sarcomeric proteins are important for fine-tuning myocardial contractility. Here, we used bottom-up proteomics and label-free quantification to identify novel post-translational modifications (PTMs) on β-myosin hea
Externí odkaz:
https://doaj.org/article/38e39ac9728c48009835c5d2747080b4
Sedimentary Signatures of Persistent Subglacial Meltwater Drainage From Thwaites Glacier, Antarctica
Autor:
A. P. Lepp, L. M. Simkins, J. B. Anderson, R. W. Clark, J. S. Wellner, C-D. Hillenbrand, J. A. Smith, A. A. Lehrmann, R. Totten, R. D. Larter, K. A. Hogan, F. O. Nitsche, A. G. C. Graham, L. Wacker
Publikováno v:
Frontiers in Earth Science, Vol 10 (2022)
Subglacial meltwater drainage can enhance localized melting along grounding zones and beneath the ice shelves of marine-terminating glaciers. Efforts to constrain the evolution of subglacial hydrology and the resulting influence on ice stability in s
Externí odkaz:
https://doaj.org/article/9b0a3d0346e94846abaa0dff60ef0c58
Autor:
L. C. Orme, X. Crosta, A. Miettinen, D. V. Divine, K. Husum, E. Isaksson, L. Wacker, R. Mohan, O. Ther, M. Ikehara
Publikováno v:
Climate of the Past, Vol 16, Pp 1451-1467 (2020)
Centennial- and millennial-scale variability of Southern Ocean temperature over the Holocene is poorly known, due to both short instrumental records and sparsely distributed high-resolution temperature reconstructions, with evidence for past temperat
Externí odkaz:
https://doaj.org/article/24f3e280ccf74ec4a3a00d57822bd0cd
Autor:
J. E. Arndt, R. D. Larter, C.-D. Hillenbrand, S. H. Sørli, M. Forwick, J. A. Smith, L. Wacker
Publikováno v:
The Cryosphere, Vol 14, Pp 2115-2135 (2020)
The Antarctic ice sheet extent in the Weddell Sea embayment (WSE) during the Last Glacial Maximum (LGM; ca. 19–25 calibrated kiloyears before present, ka cal BP) and its subsequent retreat from the shelf are poorly constrained, with two conflic
Externí odkaz:
https://doaj.org/article/ec231e3ccb6448d3aaaf324442222930
Publikováno v:
Climate of the Past, Vol 16, Pp 1075-1095 (2020)
Baffin Bay is a semi-enclosed basin connecting the Arctic Ocean and the western North Atlantic, thus making out a significant pathway for heat exchange. Here we reconstruct the alternating advection of relatively warmer and saline Atlantic waters ver
Externí odkaz:
https://doaj.org/article/5d369826332e484a81c3582eb81b36f0
Autor:
T. M. Blattmann, S.-L. Wang, M. Lupker, L. Märki, N. Haghipour, L. Wacker, L.-H. Chung, S. M. Bernasconi, M. Plötze, T. I. Eglinton
Publikováno v:
Scientific Reports, Vol 9, Iss 1, Pp 1-8 (2019)
Abstract The chemical composition of the Gaoping River in Taiwan reflects the weathering of both silicate and carbonate rocks found in its metasedimentary catchment. Major dissolved ion chemistry and radiocarbon signatures of dissolved inorganic carb
Externí odkaz:
https://doaj.org/article/4ee14f8f157847e5b6d1406c819a76ec
Autor:
L. Missiaen, S. Pichat, C. Waelbroeck, E. Douville, L. Bordier, A. Dapoigny, F. Thil, L. Foliot, L. Wacker
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 19, Iss 8, Pp 2560-2573 (2018)
Abstract Excess 231Pa and 230Th (231Paxs and 230Thxs) can be used to reconstruct past oceanic sedimentation (230Th‐normalized flux) and circulation changes ((231Pa/230Th)xs,0, hereafter Pa/Th). These quantities are determined by computing the detri
Externí odkaz:
https://doaj.org/article/354dbdf65b7b485a839eb35a0bd20c06