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- Creator:
- University of Michigan Museum of Paleontology and CTEES
- Description:
- Reconstructed CT slices for a right medial cuneiform (entocuneiform) of Cantius mckennai (University of Michigan Museum of Paleontology catalog number UMMP VP 81820), as a series of TIFF images. Raw projections are not included in this dataset.
- Keyword:
- Paleontology, Fossil, CT, Primates, Notharctidae, UMMP, University of Michigan Museum of Paleontology, Eocene, and CTEES
- Discipline:
- Science
-
- Creator:
- Agnit Mukhopadhyay
- Description:
- Conducting quantitative metrics-based performance analysis of first-principles-based global magnetosphere models is an essential step in understanding their capabilities and limitations, and providing scope for improvements in order to enhance their space weather prediction capabilities for a range of solar conditions. In this study, a detailed comparison of the performance of three global magnetohydrodynamic (MHD) models in predicting the Earth’s magnetopause location and ionospheric cross polar cap potential (CPCP) has been presented. Using the Community Coordinated Modeling Center’s Run-on-Request system and extensive database on results from various magnetospheric scenarios simulated for a variety of solar wind conditions, the aforementioned model predictions have been compared for magnetopause standoff distance estimations obtained from six empirical models, and with cross polar cap potential estimations obtained from the Assimmilative Mapping of Ionospheric Electrodynamics (AMIE) Model and the Super Dual Auroral Radar Network (SuperDARN) observations. We have considered a range of events spanning different space weather activity to analyze the performance of these models. Using a fit performance metric analysis for each event, we have quantified the models’ reproducibility of magnetopause standoff distances and CPCP against empirically-predicted observations, and identified salient features that govern the performance characteristics of the modeled magnetospheric and ionospheric quantities.
- Citation to related publication:
- Mukhopadhyay, A., Jia, X., Welling, D. T., & Liemohn, M. W. (2021). Global Magnetohydrodynamic Simulations: Performance Quantification of Magnetopause Distances and Convection Potential Predictions. Frontiers in Astronomy and Space Sciences, 8. https://doi.org/10.3389/fspas.2021.637197
- Discipline:
- Engineering and Science
-
- Creator:
- McCuen, Brett A.
- Description:
- These data are TLA events identified in MACCS magnetometer data throughout 2015. These events are short-timescale (< 60 s), large -amplitude (> 6 nT/s) magnetic disturbances measured at Earth's surface that are analyzed for space weather research purposes. and The events were identified in a year's worth of magnetic field data using an algorithm developed in the MATLAB platform. The algorithm dBdt_main.m can be run using the associated scripts (clean_maccs.m, simple_dbdt.m, extremes1.m, newdbdt.m) to return the events in the 2015_AllEvents.csv file. The substorm onset delays of each event are determined with the onset_delays.m script and the substorm event list 20191127-15-56-substorms.csv (both included).
- Keyword:
- space weather impacts, geomagnetically induced currents, GIC, transient induced currents, transient large amplitude, dB/dt search algorithm, and TLA
- Citation to related publication:
- Engebretson, M. J., Pilipenko, V. A., Ahmed, L. Y., Posch, J. L., Steinmetz, E. S., Moldwin, M. B., … Vorobev, A. V. (2019). Nighttime Magnetic Perturbation Events Observed in Arctic Canada: 1. Survey and Statistical Analysis. Journal of Geophysical Research: Space Physics, 124(9), 7442–7458. https://doi.org/10.1029/2019JA026794
- Discipline:
- Science
-
- Creator:
- Zhang, Yan, Gao, Chuanyu, Zhang, Shaoqing, Yang, Ping, Meyers, Philip A, and Wang, Guoping
- Description:
- The study focuses on reconstructing the histories of peat deposition using n-alkane biomarkers in peat cores and associated modern plant communities from four sites around a shallow maar lake in the Changbai Mountains of northeastern China. Peat development patterns in the four sites are not concordant although the sites experienced the same paleoclimate histories. Evidently, lava flows and tephra deposits produced an uneven topography of the volcanogenic lake basin that controls the water depths at the four lake edge locations, thereby leading to differences in peat-forming plant communities and peat deposition among the four sites.
- Keyword:
- peat deposition, n-alkanes, volcanic eruptions, and Changbai Lake
- Citation to related publication:
- Zhang, Y., Gao, C., Zhang, S., Yang, P., Meyers, P. A., & Wang, G. (2020). N-Alkane-based reconstructions of peat accumulations and depositional conditions at four locations around a shallow maar lake in the Changbai Mountains, northeastern China (world) [Preprint]. Earth and Space Science Open Archive; Earth and Space Science Open Archive. https://doi.org/10.1002/essoar.10505381.1
- Discipline:
- Science
-
- Creator:
- Moldwin, Mark B. and O'Brien, Paul
- Description:
- A new empirical model of the plasmapause location has been developed using density data from the plasma wave receiver onboard the CRRES spacecraft for nearly 1000 orbits. The “plasmapause” is identified here as the innermost sharp gradient in density (change of a factor of 5 in <0.5 L). Such a sharp gradient was observed on 73% of the CRRES inbound and outbound orbits that returned data. The plasmapause location is expressed as a linear function of Kp (previous 12 hour maximum) and local time. The model gives the linear best fit location of the plasmapause as well as the standard deviations of the model parameters.
- Keyword:
- Plasmapause and Plasmasphere
- Citation to related publication:
- Moldwin, M. B., Downward, L., Rassoul, H. K., Amin, R., and Anderson, R. R. (2002), A new model of the location of the plasmapause: CRRES results, J. Geophys. Res., 107( A11), 1339, doi:10.1029/2001JA009211 and O'Brien, T. P., and Moldwin, M. B. (2003), Empirical plasmapause models from magnetic indices, Geophys. Res. Lett., 30, 4, 1152. doi:10.1029/2002GL016007
- Discipline:
- Science
-
- Creator:
- Shane, Alexander
- Description:
- This data set was created with the purpose to study the electron pitch angle distributions on dayside closed crustal fields at Mars and to compare with theoretical predictions made by numerical modeling. Analyzing the plasma environment of the crustal fields was another point of study to determine if whistler waves can interact with high energy superthermal electrons.
- Keyword:
- Mars, superthermal electron, pitch angle distribution, and crustal magnetic field
- Discipline:
- Science
-
Computed tomography voxel dataset for ummz:mammals:154693-Blarina brevicauda brevicauda-Skull-DiceCT
- Creator:
- University of Michigan Museum of Zoology
- Description:
- Scan of specimen ummz:mammals:154693 (Blarina brevicauda brevicauda) - Skull. Reconstructed Dataset includes 1219 TIF images (each 1013 x 1693 x 1 voxel at 0.033795 mm resolution, derived from 3141 scan projections), xtek and vgi files for volume reconstruction. and Scan of specimen ummz:mammals:154693 (Blarina brevicauda brevicauda) - Skull. Raw Dataset includes 3141 TIF images (each 1013 x 1693 x 1 voxel at 0.03379497 mm resolution, derived from 3141 scan projections), xtek and vgi files for volume reconstruction.
- Keyword:
- Animalia, Chordata, Mammalia, Soricomorpha, Soricidae, Blarina brevicauda brevicauda, 1987337719, computed tomography, X-ray, 3D, and DiceCT
- Citation to related publication:
- For more information on the original UMMZ specimen, see: https://www.gbif.org/occurrence/1987337719
- Discipline:
- Science
-
- Creator:
- University of Michigan Museum of Zoology
- Description:
- Scan of specimen ummz:mammals:166889 (Blarina brevicauda kirtlandi) - WholeBody. Raw Dataset includes 3141 TIF images (each 877 x 1047 x 1 voxel at 0.03681702 mm resolution, derived from 3141 scan projections), xtek and vgi files for volume reconstruction. and Scan of specimen ummz:mammals:166889 (Blarina brevicauda kirtlandi) - WholeBody. Reconstructed Dataset includes 1882 TIF images (each 877 x 1047 x 1 voxel at 0.036817 mm resolution, derived from 3141 scan projections), xtek and vgi files for volume reconstruction.
- Keyword:
- Animalia, Chordata, Mammalia, Soricomorpha, Soricidae, Blarina brevicauda kirtlandi, 1987233799, computed tomography, X-ray, 3D, and DiceCT
- Citation to related publication:
- For more information on the original UMMZ specimen, see: https://www.gbif.org/occurrence/1987233799
- Discipline:
- Science
-
- Creator:
- University of Michigan Museum of Zoology
- Description:
- Scan of specimen ummz:mammals:166889 (Blarina brevicauda kirtlandi) - Skull. Raw Dataset includes 3141 TIF images (each 1570 x 1531 x 1 voxel at 0.01919876 mm resolution, derived from 3141 scan projections), xtek and vgi files for volume reconstruction. and Scan of specimen ummz:mammals:166889 (Blarina brevicauda kirtlandi) - Skull. Reconstructed Dataset includes 1978 TIF images (each 1570 x 1531 x 1 voxel at 0.019199 mm resolution, derived from 3141 scan projections), xtek and vgi files for volume reconstruction.
- Keyword:
- Animalia, Chordata, Mammalia, Soricomorpha, Soricidae, Blarina brevicauda kirtlandi, 1987233799, computed tomography, X-ray, 3D, and DiceCT
- Citation to related publication:
- For more information on the original UMMZ specimen, see: https://www.gbif.org/occurrence/1987233799
- Discipline:
- Science
-
- Creator:
- University of Michigan Museum of Zoology
- Description:
- Scan of specimen ummz:mammals:154691 (Blarina brevicauda brevicauda) - WholeBody. Raw Dataset includes 3141 TIF images (each 1187 x 834 x 1 voxel at 0.03976336 mm resolution, derived from 3141 scan projections), xtek and vgi files for volume reconstruction. and Scan of specimen ummz:mammals:154691 (Blarina brevicauda brevicauda) - WholeBody. Reconstructed Dataset includes 2000 TIF images (each 1187 x 834 x 1 voxel at 0.039763 mm resolution, derived from 3141 scan projections), xtek and vgi files for volume reconstruction.
- Keyword:
- Animalia, Chordata, Mammalia, Soricomorpha, Soricidae, Blarina brevicauda brevicauda, 1987241426, computed tomography, X-ray, and 3D
- Citation to related publication:
- For more information on the original UMMZ specimen, see: https://www.gbif.org/occurrence/1987241426
- Discipline:
- Science
-
Computed tomography voxel dataset for ummz:mammals:154691-Blarina brevicauda brevicauda-Skull-DiceCT
- Creator:
- University of Michigan Museum of Zoology
- Description:
- Scan of specimen ummz:mammals:154691 (Blarina brevicauda brevicauda) - Skull. Reconstructed Dataset includes 1035 TIF images (each 1322 x 910 x 1 voxel at 0.027133 mm resolution, derived from 3141 scan projections), xtek and vgi files for volume reconstruction. and Scan of specimen ummz:mammals:154691 (Blarina brevicauda brevicauda) - Skull. Raw Dataset includes 3141 TIF images (each 1322 x 910 x 1 voxel at 0.02713322 mm resolution, derived from 3141 scan projections), xtek and vgi files for volume reconstruction.
- Keyword:
- Animalia, Chordata, Mammalia, Soricomorpha, Soricidae, Blarina brevicauda brevicauda, 1987241426, computed tomography, X-ray, 3D, and DiceCT
- Citation to related publication:
- For more information on the original UMMZ specimen, see: https://www.gbif.org/occurrence/1987241426
- Discipline:
- Science
-
- Creator:
- University of Michigan Museum of Zoology
- Description:
- Scan of specimen UMMZ:herps:130609 (PHAEOGNATHUS HUBRICHTI) - WholeBody. Raw Dataset includes 1601 TIF images (each 373 x 372 x 1 voxel at 0.1000025 mm resolution, derived from 1601 scan projections), xtek and vgi files for volume reconstruction. and Scan of specimen UMMZ:herps:130609 (PHAEOGNATHUS HUBRICHTI) - WholeBody. Reconstructed Dataset includes 2000 TIF images (each 373 x 372 x 1 voxel at 0.100002 mm resolution, derived from 1601 scan projections), xtek and vgi files for volume reconstruction.
- Keyword:
- Animalia, Chordata, Amphibia, CAUDATA, PLETHODONTIDAE, PHAEOGNATHUS HUBRICHTI, 1987157237, computed tomography, X-ray, and 3D
- Citation to related publication:
- For more information on the original UMMZ specimen, see: https://www.gbif.org/occurrence/1987157237
- Discipline:
- Science
-
- Creator:
- University of Michigan Museum of Zoology
- Description:
- Scan of specimen UMMZ:mammals:112964 (Desmodus rotundus) - WholeBody. Raw Dataset includes 3141 TIF images (each 1047 x 1326 x 1 voxel at 0.04145749 mm resolution, derived from 3141 scan projections), xtek and vgi files for volume reconstruction. and Scan of specimen UMMZ:mammals:112964 (Desmodus rotundus) - WholeBody. Reconstructed Dataset includes 2000 TIF images (each 1047 x 1326 x 1 voxel at 0.041457 mm resolution, derived from 3141 scan projections), xtek and vgi files for volume reconstruction.
- Keyword:
- Animalia, Chordata, Mammalia, Chiroptera, Phyllostomidae, Desmodus rotundus, 1987291741, computed tomography, X-ray, 3D, and DiceCT
- Citation to related publication:
- For more information on the original UMMZ specimen, see: https://www.gbif.org/occurrence/1987291741
- Discipline:
- Science
-
- Creator:
- University of Michigan Museum of Zoology
- Description:
- Scan of specimen UMMZ:herps:130609 (PHAEOGNATHUS HUBRICHTI) - Skull. Raw Dataset includes 1601 TIF images (each 1324 x 1087 x 1 voxel at 0.01110375 mm resolution, derived from 1601 scan projections), xtek and vgi files for volume reconstruction. and Scan of specimen UMMZ:herps:130609 (PHAEOGNATHUS HUBRICHTI) - Skull. Reconstructed Dataset includes 1951 TIF images (each 1324 x 1087 x 1 voxel at 0.011104 mm resolution, derived from 1601 scan projections), xtek and vgi files for volume reconstruction.
- Keyword:
- Animalia, Chordata, Amphibia, CAUDATA, PLETHODONTIDAE, PHAEOGNATHUS HUBRICHTI, 1987157237, computed tomography, X-ray, and 3D
- Citation to related publication:
- For more information on the original UMMZ specimen, see: https://www.gbif.org/occurrence/1987157237
- Discipline:
- Science
-
- Creator:
- University of Michigan Museum of Zoology
- Description:
- Scan of specimen UMMZ:mammals:112964 (Desmodus rotundus) - Skull. Raw Dataset includes 3141 TIF images (each 1554 x 1520 x 1 voxel at 0.02332415 mm resolution, derived from 3141 scan projections), xtek and vgi files for volume reconstruction. and Scan of specimen UMMZ:mammals:112964 (Desmodus rotundus) - Skull. Reconstructed Dataset includes 1656 TIF images (each 1554 x 1520 x 1 voxel at 0.023324 mm resolution, derived from 3141 scan projections), xtek and vgi files for volume reconstruction.
- Keyword:
- Animalia, Chordata, Mammalia, Chiroptera, Phyllostomidae, Desmodus rotundus, 1987291741, computed tomography, X-ray, and 3D
- Citation to related publication:
- For more information on the original UMMZ specimen, see: https://www.gbif.org/occurrence/1987291741
- Discipline:
- Science
-
- Creator:
- University of Michigan Museum of Zoology
- Description:
- Scan of specimen UMMZ:mammals:99103 (Desmodus rotundus) - WholeBody. Reconstructed Dataset includes 2000 TIF images (each 881 x 1326 x 1 voxel at 0.041457 mm resolution, derived from 3141 scan projections), xtek and vgi files for volume reconstruction. and Scan of specimen UMMZ:mammals:99103 (Desmodus rotundus) - WholeBody. Raw Dataset includes 3141 TIF images (each 881 x 1326 x 1 voxel at 0.04145749 mm resolution, derived from 3141 scan projections), xtek and vgi files for volume reconstruction.
- Keyword:
- Animalia, Chordata, Mammalia, Chiroptera, Phyllostomidae, Desmodus rotundus, 1987245972, computed tomography, X-ray, 3D, and DiceCT
- Citation to related publication:
- For more information on the original UMMZ specimen, see: https://www.gbif.org/occurrence/1987245972
- Discipline:
- Science
-
- Creator:
- University of Michigan Museum of Zoology
- Description:
- Scan of specimen UMMZ:mammals:99103 (Desmodus rotundus) - Skull. Reconstructed Dataset includes 1464 TIF images (each 1443 x 1496 x 1 voxel at 0.023324 mm resolution, derived from 3141 scan projections), xtek and vgi files for volume reconstruction. and Scan of specimen UMMZ:mammals:99103 (Desmodus rotundus) - Skull. Raw Dataset includes 3141 TIF images (each 1443 x 1496 x 1 voxel at 0.02332415 mm resolution, derived from 3141 scan projections), xtek and vgi files for volume reconstruction.
- Keyword:
- Animalia, Chordata, Mammalia, Chiroptera, Phyllostomidae, Desmodus rotundus, 1987245972, computed tomography, X-ray, and 3D
- Citation to related publication:
- For more information on the original UMMZ specimen, see: https://www.gbif.org/occurrence/1987245972
- Discipline:
- Science
-
- Creator:
- University of Michigan Museum of Zoology
- Description:
- Scan of specimen ummz:herps:90288 (SEPSINA TETRADACTYLA) - WholeBody. Reconstructed Dataset includes 1983 TIF images (each 241 x 360 x 1 voxel at 0.053454 mm resolution, derived from 1601 scan projections), xtek and vgi files for volume reconstruction. and Scan of specimen ummz:herps:90288 (SEPSINA TETRADACTYLA) - WholeBody. Raw Dataset includes 1601 TIF images (each 241 x 360 x 1 voxel at 0.05345412 mm resolution, derived from 1601 scan projections), xtek and vgi files for volume reconstruction.
- Keyword:
- Animalia, Chordata, Reptilia, SAURIA, SCINCIDAE, SEPSINA TETRADACTYLA, 1987065539, computed tomography, X-ray, and 3D
- Citation to related publication:
- For more information on the original UMMZ specimen, see: https://www.gbif.org/occurrence/1987065539
- Discipline:
- Science
-
- Creator:
- University of Michigan Museum of Zoology
- Description:
- Scan of specimen ummz:herps:90288 (SEPSINA TETRADACTYLA) - Skull. Reconstructed Dataset includes 1479 TIF images (each 687 x 924 x 1 voxel at 0.010001 mm resolution, derived from 1601 scan projections), xtek and vgi files for volume reconstruction. and Scan of specimen ummz:herps:90288 (SEPSINA TETRADACTYLA) - Skull. Raw Dataset includes 1601 TIF images (each 687 x 924 x 1 voxel at 0.01000145 mm resolution, derived from 1601 scan projections), xtek and vgi files for volume reconstruction.
- Keyword:
- Animalia, Chordata, Reptilia, SAURIA, SCINCIDAE, SEPSINA TETRADACTYLA, 1987065539, computed tomography, X-ray, and 3D
- Citation to related publication:
- For more information on the original UMMZ specimen, see: https://www.gbif.org/occurrence/1987065539
- Discipline:
- Science
-
- Creator:
- University of Michigan Museum of Zoology
- Description:
- Scan of specimen ummz:herps:116965 (CHRYSOPELEA PARADISI) - WholeBody. Reconstructed Dataset includes 2000 TIF images (each 2000 x 846 x 1 voxel at 0.049512 mm resolution, derived from 1601 scan projections), xtek and vgi files for volume reconstruction. and Scan of specimen ummz:herps:116965 (CHRYSOPELEA PARADISI) - WholeBody. Raw Dataset includes 1601 TIF images (each 2000 x 846 x 1 voxel at 0.04951242 mm resolution, derived from 1601 scan projections), xtek and vgi files for volume reconstruction.
- Keyword:
- Animalia, Chordata, Reptilia, OPHIDIA, COLUBRIDAE, CHRYSOPELEA PARADISI, 1987085793, computed tomography, X-ray, and 3D
- Citation to related publication:
- For more information on the original UMMZ specimen, see: https://www.gbif.org/occurrence/1987085793
- Discipline:
- Science