Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
6
datasets available to search
ShareScore release 0.9.0
Dataset results
6 results for “eclipse WWV”
W0TBR April 2024 Eclipse WWV Doppler Shift
<h2><strong>April 2024 Solar Eclipse Data via W0TBR</strong></h2> <p>W0TBR recorded Doppler drift of 15MHz WWV/WWVH carrier signals prior to and subsequent to the April 8 2024 solar eclipse.</p> <p>Although the W0TBR station was not in the direct path of the solar eclipse - with about only 33% occlusion at maximum shadow - the Doppler shift was recorded to determine any effect as compared to other shifts to be recorded within the direct eclipse path or within the midpoint of the signal path between WWV/WWVH and the recording station.</p> <p>W0TBR is located in Grid CN85qn - Lat. 45.555N & Lon. 122.623W at an elevation of 68.5m ASL.</p> <p>Antenna used is dual band inverted V fan dipole resonant on 20 and 17 meters with an apex at 10 meters above average terrain and tuned for max signal at 15MHz.</p> <p>Antenna feed is terminated at each end with 1:1 balun to minimize noise and non-resonant effects.</p> <p>Radio used is a Flex 1500 SDR stabilized with a 10MHz OCXO. Radio was tuned to 14.999MHz USB with AGC deactivated and RF gain fixed at value of 45/100.</p> <p>Received +/- 1kHz signal was directly fed through Conexant audio chip of HP 600G3 computer into Spectrum Lab (SpecLab) software.</p> <p>SpecLab (V 2.99 b15) was configured similar to that used by WA9VNJ for the 2017 solar eclipse recordings: 512K FFTs with 75% overlap resulting in readings every 12 seconds.</p> <p>SpecLab time, peak frequency and amplitude data were recorded from 0143 UTC to 2359 UTC on April 08 2024 and saved to a text file.</p> <p>Screen shots of the frequency shifts (+/- 3Hz) were taken each two hours for a total of six hours around the local maximum solar shadow which began about 1733 UTC, peaked at about 1825 UTC and ended about 1919 UTC. Note that the original SpecLab screenshots are in vertical time orientation; in order to provide a comparable view where time is on the horizontal axis the views are inverted and ‘stitched’ together for the final view’s full six hour period.</p>
December 2021 Eclipse Monitoring of WWV at 5 MHz and 10 MHz by K1FR Using FlexRadio 6700/GPSDO and fldigi
<p>This dataset contains observations of WWV at 5 and 10 MHz gathered from December 1 through 10, 2021 as part of the study of the effects of solar eclipses on the ionosphere. The data was collected by amateur radio station K1FR located at 38.828, -77.104 using a FlexRadio 6700 with GPSDO connected to a long wire antenna. The fldigi application was used to analyze and record the received frequency of the WWV station at one second intervals. The dataset includes .CSV files of these measurements.</p> <p>Three independent receivers were created within the 6700 - one for 5 MHz and two for 10 MHz. The first two receivers' data are included in this dataset. Files named analysis_xxxxx-K1FR-1 are for 10 MHz, and those named analysis_xxxxx-K1FR-2 are for 5 MHz. The third independent receiver was used to capture realtime audio from WWV at 10MHz which will be included in a separate dataset.</p>
December 2021 Eclipse Monitoring of WWV at 10 MHz by K1FR Using FlexRadio 6700/GPSDO and Audacity
<p>This dataset contains observations of WWV 10 MHz gathered from December 1 through 10, 2021 as part of the study of the effects of solar eclipses on the ionosphere. The data was collected by amateur radio station K1FR located at 38.828, -77.104 using a FlexRadio 6700 with GPSDO connected to a long wire antenna. The Audacity application was used to record the realtime audio of the receiver which was in the USB mode and tuned to 9999.000 kHz thus producing a 1000 hz tone at the carrier frequency of WWV. The AGC on the receiver was set to “ON-medium.” <strong>PLEASE NOTE:</strong> due to operator error, the metadata in the Audacity generated .WAV files show that the AGC was “OFF”.</p> <p>See DOI 10.5281/zenodo.5775043 for data taken via the fldigi application on the same audio stream simultaneously. That dataset has .CSV files of the apparent doppler of WWV 10 MHz, and these files are named “analysis_xxxxx_K1FR-1.CSV.</p>
FFT and WAV files of 10MHz WWV Doppler shift during 8-21-2017 Solar eclipse
<p>HL Serra N6NC</p> <p>San Diego CA 32-50-36N 117-16-16W</p> <p>FFT and WAV files started 1415UT-2300UT 8-21-2017 [FFT file starts 24 hrs earlier for comparison FFTs)</p> <p>Omnidirectional 8" "active antenna"</p> <p>Rcvr Racal RA 6790 in USB mode</p> <p>Rcvr and HP-3325A GPSDO-controlled 10 MHz.</p> <p>Tuned rcvr to 9,999,000 Hz in USB mode to record in SpecLab the offset from 1000Hz beat note of 10 MHz signal.</p> <p>Very little if any Doppler shift of signal during eclipse, probably because I am located on the same side of the eclipse totality as WWV in Boulder CO. Besides rcvr, I tracked WWV frequency with GPSDO-controlled HP-3325 and scope comparing the tuned HP frequency with the rcvr's 455kHz IF to find recorded FFT offset. HP stable for two days showing WWV freq as 10,000,000.013 Hz by watching unmoving Lissajous figure on scope, so no visually perceptible Doppler excursions in frequency detected, but the FFT data will show whatever frequency movement there might have been.</p> <p> </p> <p>73, Larry N6NC</p>
December 2021 eclipse monitoring of WWV at 10 MHz using Grape 1
<p>Ten days of fldigi recordings in HamSci Grape 1 format of WWV at 10 MHz around the December 2021 eclipse</p>
WWV and CHU Eclipse Frequency Measurement
<p>Recordings of WWV (2.5 MHz, 5.0 MHz) and CHU (3.33 MHz) for the December 2021 Eclipse Festival of Frequency Measurement</p> <p><strong>Name, Callsign:</strong> William Breidenthal, KE6XO<br> <strong>Latitude and Longitude:</strong> 40°03'33"N 105°12'32"W <br> <strong>Elevation:</strong> 1564 meters<br> <strong>Start time of the analysis:</strong> November 31, 2021 07:04:56 UTC<br> <strong>Stop time of the analysis:</strong> January 12, 2022 08:00:00 UTC<br> <strong>GPSDO:</strong> Yes</p> <p><strong>Hardware Description:</strong></p> <ul> <li>Antenna: MLA-30+ Magnetic Loop</li> <li>Antenna pointing direction: North/South</li> <li>Receiver Type: Ettus Research USRP2 with BasicRX Daughterboard</li> <li>Frequency reference type: GPSDO 10 MHz (Masterclock MCR1000)</li> <li>Frequency Measurement Technique:<a href="https://github.com/ccera-astro/wwv_doppler"> ccera-astro/wwv_doppler</a> with GNU Radio</li> </ul> <p><strong>Notes:</strong> Measurements recorded 70 km away from WWV in Boulder, CO. Some data is missing due to power outages. wwv_doppler was modified to add a 3rd channel to simultaneously record CHU.</p>
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.