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4 results for “Schmidt hammer”
Dataset of micro-roughness, Schmidt hammer and reflectance spectra obtained at Hallstaetter Glacier foreland
<p>The files contain data of micro-roughness (Ra and Rz), raw data of Schmidt hammer rebound-values, and reflectance spectra obtained at Hallstaetter Glacier foreland in July 2022. The data was use in a publication: Dąbski M, Badura I, Kycko M, Grabarczyk A, Matlakowska R, Otto J-C. The Development of Limestone Weathering Rind in a Proglacial Environment of the Hallstätter Glacier. <i>Minerals</i>. 2023; 13(4):530. https://doi.org/10.3390/min13040530. </p><p>Funding provided by National Science Centre, Poland (Preludium Bis-2 2020/39/O/ST10/01068).</p><p>Micro-roughness, rock strength (Schmidt hammer rebound values), and spectral reflectance were obtained in-situ on glacially abraded rock surfaces along a transect from the glacial snout to the outermost moraines from the Little Ice Age, covering circa 172 years of subaerial weathering in the proglacial alpine environment. UAV surveys of the studied area were performed to obtain Digital Elevation Models (DEMs) and allow for detailed comparative studies in the future.</p><p>Test site 1 was very close to the glacier (undergoes weathering for 1–2 years), site 2 was in the zone c. 10 years old, site 3 was in the zone c. 50–51 years old, site 4 was in the zone c. 105–106 years old, and the last one (site 5) was on the LIA moraines, where the duration of weathering is c. 167–172 years. The sites were located on bedrock or boulders embedded in the moraines with distinct traces of glacial abrasion, allowing us to infer that older weathering rind (developed before glacial accumulation) has been eroded. The sites were selected based on their age, homogenous petrography, accessibility, and suitability for micro-roughness measurements. Within each test site, we selected ten specific rock surfaces (c. 100 cm2 each), with clear signs of glacial abrasion, for the measurements of micro-roughness, Schmidt hammer rebound (rock strength), and spectral reflectance. </p><p> </p><p> </p>
Dataset of micro-roughness, Schmidt hammer and reflectance spectra obtained at Midtre Lovénbreen foreland
<p>The files contain data of micro-roughness (Ra and Rz), raw and corrected data of Schmidt hammer rebound-values, and reflectance spectra obtained at Midtre Lovénbreen glacier foreland in July 2023. </p> <p>Funding provided by National Science Centre, Poland (Preludium Bis-2 2020/39/O/ST10/01068).</p> <p>Micro-roughness, rock strength (Schmidt hammer rebound values), and spectral reflectance were obtained in-situ on glacially abraded rock surfaces along a transect from the glacial snout to the outermost moraines from the Little Ice Age, covering circa 118 years of subaerial weathering in the proglacial polar environment. UAV surveys of the studied area were performed to obtain Digital Elevation Models (DEMs) and allow for detailed comparative studies in the future.</p> <p>Test site 1 was very close to the glacier (undergoes weathering for 3 years), site 2 was in the zone c. 43 years old, site 3 was in the zone c. 63 years old, site 4 was in the zone c. 87 years old, and the last one (site 5) was on the LIA moraines, where the duration of weathering is c. 118 years. The sites were located on biotite gneiss boulders embedded in the moraines with distinct traces of glacial abrasion, allowing us to infer that older weathering rind (developed before glacial accumulation) has been eroded. The sites were selected based on their age, homogenous petrography, accessibility, and suitability for micro-roughness measurements. Within each test site, we selected ten specific rock surfaces (c. 100 cm2 each), with clear signs of glacial abrasion, for the measurements of micro-roughness, Schmidt hammer rebound (rock strength), and spectral reflectance. </p> <p> </p>
River bed sediment and debris flow deposit lithology and Schmidt Hammer Rock Strength dataset, Suiattle River, Washington State, USA
<p>This dataset includes measurements of river bed sediment lithology and Schmidt Hammer Rock Strength (SHRS), as well as debris flow deposit lithology, grain size, and SHRS, at sites along the Suiattle River, North Cascades, Washington State, USA. See Pfeiffer et al. (2022, JGR-ES) for further description of the collection methodology and site description.</p>
Table presenting the results of Schmidt hammer tests conducted in the JK-1 cave and the rocky courtyard outside
<p><span>This research was funded by National Science Centre, Poland, research project no. 2020/39/D/ST10/00861.</span></p> <p><span>T</span><span>he table presents the results of Schmidt hammer tests conducted in the JK-1 cave and the rocky courtyard outside. The tests were conducted in the Białe Skały massif, Stołowe Mountains, SW Poland. LW, CW, RW – cave walls; LC, MC – cave ceiling; C – rocky courtyard.</span></p>
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