Nathan Smith
Nathan Smith
Nathan Smith
Very much out of use in September 1981 was coke oven 0.4.0WE RSH7693/53. These probably had the hardest lives of any industrial locomotives. Pentax SP1000/28mm Ilford FP4
NSF's mission is to advance the progress of science, a mission accomplished by funding proposals for research and education made by scientists, engineers, and educators from across the country.
Shop girlfromthe6's closet or find the perfect look from millions of stylists. Fast shipping and buyer protection. Excellent condition. Size med runs smaller. Fits more like a small. Super cool and distressed
Shop msgolden1's closet or find the perfect look from millions of stylists. Fast shipping and buyer protection. Brand new and sold out everywhere. Matching bottoms available in separate listing. Color is called Buff.
Check out this listing I just found on Poshmark: NSF Distressed Sweatshirt Small NEW. #shopmycloset #poshmark #shopping #style #pinitforlater #NSF #Tops
ICEPURE provides you cool ice water! 🎊 Stock up on some refrigerator filters for your home. 20% off any one refrigerator filter purchase! 🔔 Follow me for an extra $3 off code.
Nationaal Songfestival 1970Datum: woensdag 11 februari 1970Lokatie: Congresgebouw, Den HaagPresentatie: Pim JacobsNa de overwinningen van Spanje, Verenigd Koninkrijk, Frankrijk en Nederland
NSF's mission is to advance the progress of science, a mission accomplished by funding proposals for research and education made by scientists, engineers, and educators from across the country.
An interesting transfer tube has just arrived at Starbase. As spotted by Mary (@BocaChicaGal)
FussballwappenNET is the world's largest compilation of individually edited International Football shields. In total, the collection "The Football Logos" includes over 186 individual series with over 13.000 club and national team logos from 239 countries. This project is created, organized and managed under Denis Glasow Artwork© 2010-2024/[Picture Size 1280x800px] #football #footballshields #design #berlin
Learn about the icon that appears on our NSF Certified for Sport® products.
GOLDEN, Colo., March 6, 2015 – Colorado School of Mines Civil and Environmental Engineering Assistant Professor Kathleen Smits has received a 2015 NSF CAREER Award. The grant will support her research, “Advancing the science and education of land surface-atmosphere interactions: Interweaving multiscale experimental and modeling approaches for Land Surface Models (LSM) and experiential learning.”
Description Figure 1: SeisSound sample image This data product (for a sample click image on right or to visit SeisSound data product repository, click here ) conveys the data in four different ways: an image of the original seismogram an image of a filtered version of the seismogram an image of the spectrogram of the filtered trace an audio playback of the seismic signal that is time-compressed and amplitude-normalized so that the sound is audible for human ears (roughly 20 Hz – 20 kHz) The temporal evolution of the seismogram is depicted by the seismogram turning from a light gray color to a dark black color as time evolves. A pink vertical line in each of the sub-plots indicates the current time of the playback, as does the time counter in the upper right. The SeisSound data products do not reproduce the seismograms in true time, as this would make the movies too long and boring to listen to because the sound would be out of our hearing range. Instead the playback is sped up by the factor indicated in the x-label. For example, a speed up factor of 500 will transform the frequencies 0.5 to 40 Hz in the seismogram to 250 (0.5*500) Hz to 20,000 (40*500) Hz range of our hearing. What’s your hearing range? Test it and find out here. Both the spectrogram and audio file are created after applying a 0.5 Hz high-pass filter. To hear the full range of sounds we recommend listening to these data products with earbuds or good speakers. It is difficult to transform seismic data in a way that both the high-frequency and low-frequency signals become audible at the same time. This is because each would require a different speed-up factor to make the signals heard. To solve this problem we apply an appropriate speed-up factor to hear the higher-frequency (>0.5 Hz) energy and then use MATLAB’s voltage controlled oscillator (vco) function to create a sound signal that oscillates around an audible center frequency in proportion to the amplitude of the seismogram’s lower-frequency energy 1 . We make the length of this modulated signal identical to the time-compressed higher-frequency channel. This allows us to save these two sound outputs as a stereo sound pair 2 . The stereo sound from these dual frequency bands, in combination with the video images, allows the correlations between the lower-frequency surface-waves and high-frequency triggered earthquakes and tremor signals (if they exist) to be assessed. The color of the spectrogram indicates amplitude, where warm colors are higher amplitudes and cool colors are lower amplitudes. These amplitudes represent the log base 10 of the normalized amplitude, multiplied by a scale factor of 10. All SeisSound data products have the same scaling so comparisons can be made between products. Information about the earthquake is displayed in the first line of the title, and information about the seismic recording station, and its distance and azimuth to the earthquake, is shown in the second line of the title. Listed in the top y-axis label is the type of seismogram (i.e., velocity) and the seismogram’s channel code (i.e., BHZ). There is an option to show seismic wave phase arrival times, which are indicated with short blue vertical lines and associated blue text that displays the phases (i.e., P, S, SKS, R1). Exporting the audio channel of the SeisSound product for an event to the corresponding ground motion visualization (GMV) product produces an interesting composite movie. Click on the image below to see and hear such a composite movie created for the Sea of Okhotsk M8.2 event of May 24, 2013. In this case the audio was played only 102 times faster than true speed in order to stay in sync with the video presentation. The following table summarizes the parameters used to generate the SeisSound data product. PARAMETER SAMPLE VALUE Filter 0.5 Hz high-pass VCO filter 0.5 Hz low-pass Speed Factor 500 Approximate number of Frames requested for the movie 100 Image/Movie height (pixels) 720 P slowness (s/degree) 7.2 Rayleigh slowness (s/degree) 28.5 List of requested seismic phases P, Pn, Pg, Pdiff, pPdiff, sPdiff, PcP, PP, PP, PS, PKP, SKS, S, Sn, Sg, Sdiff, pSdiff, sSdiff, SP, ScS, SS, R1, R2 Number of seconds between two consecutive phases to avoid overprinting phase markers (second) 600 IRIS ID (links to information about the earthquake) 1916079 (26 December 2004; Sumatra; magnitude 9) Station Network IU Station name DGAR Station Channel BHZ Script Bundle To create customized SeisSounds, download the MATLAB script bundle (please read the installation instructions in this README file before installing). Footnotes [1] To do this we modulate the amplitude (volume) of the vco tone by the sum of two envelope functions. The first is the envelop of the full data trace and the second is the envelop of the data trace after a low-pass filter (<0.5 Hz) has been applied. We find that using the sum of these two envelopes we can highlight both the arrival of the largest amplitudes in the seismogram in addition to the arrival of higher frequency energy. [2] This is accomplished using MATLAB’s wavwrite function.
