This page summarizes information about the selected resource and its origin based on SPASE metadata.

SPASE version 2.2.0

Display Data Product: Polar PWI SFR-B Daily Dynamic Spectrograms

Resource ID

spase://VWO/DisplayData/POLAR/PWI/SFR.B.DS.P1D

Name

Polar PWI SFR-B Daily Dynamic Spectrograms

Alternate name

Description

The Polar PWI Sweep Frequency Receiver-B (SFR-B) collected data from March 1996 to September 1997. The SFR-B used the magnetic loop antenna (mounted on a 6m boom and oriented parallel to the Eu antenna). The SFR-B receiver spanned the frequency range from 26 Hz to 808 kHz in 5 bands: 26-200 Hz, 0.2 - 1.6 kHz, 1.7 - 12.6 kHz, 13-100 kHz, 100-808 kHz. Each image is a daily plot of the power spectral density (nT^2 Hz^-1) of received signal (color scale) as a function of operating frequency (in a logarithmic scale on vertical axis) and time (horizontal axis). At the top of each plot is a title indicating the Instrument, Receiver and Antenna used followed by the time span for the spectrogram. Beneath the time labels on the horizontal axis are ephemeris data: position of the spacecraft in radial distance (Earth radii), geomagnetic latitude, magnetic local time, and McIlwain L-shell. Overlaid on each image is a trace of the electron gyrofrequency.

Additional information

Polar Plasma Wave Investigation (PWI) Data and User's Guides: A Polar PWI page is maintained at the University of Iowa with descriptions of interpretation issues, user's guides, data availability tables, a form for creating summary plots and access to pregenerated dynamic spectrograms.
Language: en
User's Guide to PWI Receiver Design Features and Modes: Descriptions of PWI receiver and antenna modes.
Language: en

Acknowledgement

Contact

	Role	Person
1.	Principal investigator	Prof. Donald A. Gurnett
2.	General contact	Dr. J. Douglas Menietti

Release date

2012-02-24 16:58:31

Association

Prior IDs

spase://VWO/DisplayData/POLAR/PWI/Polar_PWI_SFR_B_Daily_DS_GIF

Repository

Name

The University of Iowa Radio and Plasma Wave Group Data Repository

Availability

Online

Access rights

Open

URL

Sweep Frequency Receiver (SFR) Survery Spectrograms - SFR Magnetic Antenna (Receiver B): Access to web pages listing GIF format plots for Polar PWI SFR-B dynamic spectrograms.
Language: en

Format

GIF

Encoding

None

Acknowledgement

Instrument

Polar Plasma Waves Investigation (PWI)

Measurement type

Magnetic field

Spectrum

Passive waves

Temporal description

Start date: 1996-03-25 00:00:00
Stop date: 1997-09-16 17:00:00

Spectral range

RadioFrequency

Display cadence

1 day

Observed regions

Earth.Magnetosphere

Earth.NearSurface.AuroralRegion

Earth.NearSurface.Plasmasphere

Earth.NearSurface.PolarCap

Heliosphere.Inner

Keywords

AKR

Auroral Kilometric Radiation

Auroral hiss

BEN

Banded emissions

Broadband Electrostatic Noise

Chorus

Continuum radiation

Dynamic Spectrogram

EMIC

Electromagnetic Ion Cyclotron waves

Electron Cyclotron Harmonics

Kilometric Continuum radiation

Myriametric radiation

Plasmaspheric Hiss

Solar radio burst

Spectrogram

TKR

Terrestrial Kilometric Radiation

UHR

Upper hybrid resonance

Whistler mode

Whistlers

↑

Parameters

Parameter #1

Name

SFR-B Power Spectral Density

Description

Caveats

See the web page on Polar PWI Interpretation Issues http://www-pw.physics.uiowa.edu/plasma-wave/istp/polar/interpretation.html

Units

nT^2 * Hz^-1

Wave type

Plasma waves

Quantity

ACMagneticField

Qualifier

Magnitude

Pseudo

Frequency range

Spectral range: RadioFrequency
Low frequency: 26
High frequency: 808
Units: kHz

↑

SPASE version 2.0.0

Instrument: Polar Plasma Waves Investigation (PWI)

Instrument ID

spase://SMWG/Instrument/POLAR/PWI

Name

Polar Plasma Waves Investigation (PWI)

Alternate name

Polar PWI

Description

The objectives of this investigation are to measure the spectrum, amplitude, and wave vector characteristics for naturally occurring electromagnetic and electrostatic plasma waves along the ISTP/POLAR trajectory for frequency ranges of 1 Hz to 400 kHz (magnetic), 1 Hz to 3.2 MHz (electric), and 1 Hz to 16 kHz (density fluctuations). The same characteristics are also measured for electromagnetic and electrostatic plasma waves resulting from ground-based or Shuttle-based active wave, particle, and chemical injection experiments. A unique feature of this instrument is the capability to recognize the presence of a desired phenomenon based on onboard microprocessor algorithms, and to capture the waveforms for six wave fields simultaneously. These waveforms provide simultaneous estimates for the electromagnetic wave normal, polarization, and Poynting vectors or for the electrostatic propagation and polarization vectors after ground processing. PWI experienced an undervoltage condition in its 5-volt power supply on September 16, 1997. This power supply was used to operate the digital processing units (DPU) of the instrument. Without full power, the DPUs are unable to operate and no backup power supply was incorporated into the instrument. Thus, no PWI data have been obtained by the PWI instrument since that date. Magnetic searchcoil data are still being obtained by the EFI instrument in its burst mode as long as PWI's main instrument power remains on (the default as of November 18, 1997). There is nothing that the PWI team can do to clear this undervoltage condition. Unless the condition clears itself, the PWI data set has a finite time span of March 25, 1996 through September 16, 1997.

Additional information

NSSDC's Master Catalog: Information about the Plasma Waves Investigation (PWI) experiment on the Polar mission.

Contact

	Role	Person
1.	Principal investigator	Prof. Donald A. Gurnett

Release date

2009-05-20 21:10:13

Instrument type

Waveform Receiver

Investigation name

Plasma Waves Investigation (PWI) on Polar

Observatory

POLAR

↑

SPASE version 2.2.0

Observatory: POLAR

Observatory ID

spase://SMWG/Observatory/POLAR

Name

POLAR

Alternate name

Polar Plasma Laboratory

GGS/Polar

ISTP/Polar

Description

POLAR is one of four spacecraft in the Global Geospace Science (GGS) program. These are among the six spacecraft in the International Solar Terrestrial Physics (ISTP) program. POLAR provides multi-wavelength imaging of the aurora, measuring plasma entry into the polar magnetosphere and geomagnetic tail, the flow of plasmas to and from the ionosphere, and the deposition of particle energy in the ionosphere and upper atmosphere. POLAR has on-board propulsion systems and a design lifetime of three to five years, with redundant subsystems. POLAR is cylindrical, approximately 2.8 m in diameter by 1.25 m high (plus 1.25 m for its two despun platforms), with body-mounted solar cells, weighs 1250 kg and uses 333 W of power. The spin rate is 10 rpm around an axis approximately normal to the orbital plane. It has long wire spin-plane antennas, inertial booms, and spin-plane appendages to support sensors. POLAR has two despun gimbaled instrument platforms, and booms are deployed along both Z axes. Data are stored using on-board tape recorders and are relayed to the Deep Space Network at 600 kbps maximum (250 kbps nominal) although the average real-time data rate for POLAR is 41.6 kbps. POLAR has a 22.6-h polar orbit (90 deg inclination), with perigee and apogee of 11,500 and 57,000 km. Polar was launched to observe the polar magnetosphere and, as its orbit has precessed with time, has observed the equatorial inner magnetosphere and is now carrying out an extended period of southern hemisphere coverage. Details on the POLAR mission and instrumentation are provided in Space Science Reviews (Vol. 71, Nos. 1-4, 1995) and reprinted in The Global Geospace Mission, edited by C. T. Russell (Kluwer, 1995).

Additional information

NASA Polar Project: Web site of NASA Polar Mission, including overview, data products, FTP to the data, publications, educational outreach, orbits, instrument descriptions, contacts, news archive, and ISTP archive.
NSSDC's Master Catalog: Information about the Polar mission

Contact

	Role	Person
1.	Project scientist	Dr. John B. Sigwarth

Release date

2010-08-05 18:19:11

Prior ID

spase://vspo/observatory/67

Location

Region: Earth.Magnetosphere; Earth.Magnetosphere.Polar; Earth.Magnetosphere.RadiationBelt

↑

SPASE version 2.2.1

Repository: The University of Iowa Radio and Plasma Wave Group Data Repository

Repository ID

spase://SMWG/Repository/UIowa/RadioPlasmaWaveGroup

Name

The University of Iowa Radio and Plasma Wave Group Data Repository

Alternate name

Description

Data Repository at The University of Iowa, Radio and Plasma Wave Research Group. The Radio and Plasma Wave Group in the Department of Physics and Astronomy in The University of Iowa specializes in the study of naturally occurring radio and plasma waves in space plasmas. The group has provided radio and plasma wave receivers for more than 20 space missions, including Voyagers 1 and 2, Geotail, Wind, Cassini, Cluster (Rumba, Salsa, Samba, Tango), and Mars Express, which are currently operational. Our instrument on Galileo entered the atmosphere of Jupiter along with the rest of the spacecraft in September, 2003, and the Earth-orbiting Polar spacecraft was decommissioned in April, 2008. The group has recently developed an instrument for Juno, the Jupiter polar orbiter successfully launched August 5, 2011. We are also working on instruments for the Radiation Belt Storm Probes which will study the Earth's radiation belts, ionosphere, and thermosphere after launch in 2012. This group is also the home of the outer planets subnode of the Planetary Data System's Planetary Plasma Interactions Node which provides access to and expertise on radio and plasma wave data sets from the Voyager observations at the outer planets Jupiter, Saturn, Uranus, and Neptune; Galileo observations from Venus, Earth, and Jupiter; and Pioneer 10 and 11 Geiger Tube Telescope observations at Jupiter and Saturn. Wideband plasma wave observations from a number of Earth-orbiting spacecraft including Dynamics Explorer (DE) 1, International Sun Earth Explorers (ISEE) 1 and 2, Interplanetary Monitoring Platform (IMP) 6, Hawkeye, Small Scientific Satellite (SSS), Active Magnetospheric Particle Tracing Explorer (AMPTE), and Injun V are being archived here and can be ordered or accessed via specialized software. Browse images of some of these data are also available as part of our Space Physics Data Center. The plasma wave group consists of one faculty member and several scientists, engineers, programmers, and support personnel.

Additional information

The University of Iowa Radio and Plasma Wave Group Home Page: Access to pages describing current and past spacecraft projects, description of the Radio and Plasma Wave Group, their publications and links to other data system projects.
Language

Acknowledgement

Please acknowledge the project PI and The University of Iowa.

Contact

	Role	Person
1.	Principal investigator	Prof. Donald A. Gurnett
2.	Principal investigator	Dr. William S. Kurth
3.	Principal investigator	Ms. Jolene S. Pickett
4.	Principal investigator	Dr. Roger R. Anderson
5.	General contact	Ms. Kathy R. Kurth
6.	Scientist	Dr. George B. Hospodarsky
7.	Scientist	Dr. J. Douglas Menietti
8.	Scientist	Dr. David D. Morgan
9.	Data producer	Mr. Richard L. Huff
10.	Data producer	Ms. Ann M. Persoon
11.	Technical contact	Mr. Larry J. Granroth

Release date

2011-10-20 18:00:00

Prior ID

Access URL

The University of Iowa Radio and Plasma Wave Group Data Repository: Data access is available from the spacecraft project links off of the home page
Language

↑

Data Description

Table of Contents

Display Data Product: Polar PWI SFR-B Daily Dynamic Spectrograms

Parameters

Parameter #1

Instrument: Polar Plasma Waves Investigation (PWI)

Observatory: POLAR

Person: Prof. Donald A. Gurnett

Person: Dr. J. Douglas Menietti

Person: Dr. William S. Kurth

Person: Ms. Jolene S. Pickett

Person: Dr. Roger R. Anderson

Person: Ms. Kathy R. Kurth

Person: Dr. George B. Hospodarsky

Person: Dr. David D. Morgan

Person: Mr. Richard L. Huff

Person: Ms. Ann M. Persoon

Person: Mr. Larry J. Granroth

Person: Dr. John B. Sigwarth

Repository: The University of Iowa Radio and Plasma Wave Group Data Repository