Imaging · collection · 1999

BOREAS RSS-17 Dielectric Constant Profile Measurements

Listed in NASA Earthdata CMR and NASA Data Portal — shown once because both records carry DOI 10.3334/ornldaac/301

The BOREAS RSS-17 team acquired and analyzed imaging radar data from the ESA's ERS-1 over a complete annual cycle at the BOREAS sites in Canada in 1994 to detect shifts in radar backscatter related to varying environmental conditions.

Description

This data set consists of dielectric constant profile measurements from selected trees at various BOREAS flux tower sites. The relative dielectric constant was measured at C-band (frequency = 5 GHz) as a function of depth into the trunk of three trees at each site.

Measurements were made during April 1994 with an Applied Microwave Corporation field PDP fitted with a 0.358-cm (0.141-inch) diameter coaxial probe tip.

Topics

Stated by source: DIELECTRIC PROBE · FIELD INVESTIGATION · Forests · Plant Characteristics · Radar Backscatter
From keywords: Astronomy & Astrophysics · Earth & Environmental Science · Engineering · Life Sciences · Ocean & Atmospheric Science · Physics
Inferred from text: Geophysics 72% · Imaging 75%

Provenance · 2 source records, 23 field assertions

Source	Key	Last seen	Raw
NASA Earthdata CMR	C2807645232-ORNL_CLOUD	15 d ago	JSON v1
NASA Data Portal	5f211227-3e57-42e8-b2ce-5e4dcea84f85	12 d ago	JSON v1

Field	Assertion	Extractor	Evidence
access_level	source · NASA CMR	connector:nasa_cmr@1.0.0
concepts[field].anzsrc:group:3706	enrichment · NASA CMR	taxonomy-embedding@1.0.0	title+keywords+description (72%)
concepts[field].local:field:astronomy	mapping · data nasa gov	connector:data_nasa_gov@1.0.0
concepts[field].local:field:earth-environmental	mapping · data nasa gov	connector:data_nasa_gov@1.0.0
concepts[field].local:field:engineering	mapping · data nasa gov	connector:data_nasa_gov@1.0.0
concepts[field].local:field:life-sciences	mapping · data nasa gov	connector:data_nasa_gov@1.0.0
concepts[field].local:field:ocean-atmospheric	mapping · data nasa gov	connector:data_nasa_gov@1.0.0
concepts[field].local:field:physics	mapping · data nasa gov	connector:data_nasa_gov@1.0.0
concepts[instrument].gcmd_instrument:dielectric-probe	source · NASA CMR	connector:nasa_cmr@1.0.0
concepts[measured_variable].gcmd:earth-science/biosphere/ecosystems/terrestrial-ecosystems/forests	source · NASA CMR	connector:nasa_cmr@1.0.0
concepts[measured_variable].gcmd:earth-science/biosphere/vegetation/plant-characteristics	source · NASA CMR	connector:nasa_cmr@1.0.0
concepts[measured_variable].gcmd:earth-science/spectral-engineering/radar/radar-backscatter	source · NASA CMR	connector:nasa_cmr@1.0.0
concepts[modality].local:modality:imaging	enrichment · NASA CMR	keyword-concept-rules@1.0.0	title+description (75%)
concepts[platform].gcmd_platform:field-investigation	source · NASA CMR	connector:nasa_cmr@1.0.0
created_date	source · NASA CMR	connector:nasa_cmr@1.0.0
description	source · NASA CMR	connector:nasa_cmr@1.0.0	/umm/Abstract
license_text	source · data nasa gov	connector:data_nasa_gov@1.0.0
publication_date	source · NASA CMR	connector:nasa_cmr@1.0.0
spatial	source · NASA CMR	connector:nasa_cmr@1.0.0	/umm/SpatialExtent
temporal	source · NASA CMR	connector:nasa_cmr@1.0.0	/umm/TemporalExtents
title	source · NASA CMR	connector:nasa_cmr@1.0.0	/umm/EntryTitle
updated_date	source · NASA CMR	connector:nasa_cmr@1.0.0
version_label	source · NASA CMR	connector:nasa_cmr@1.0.0

BOREAS RSS-17 Dielectric Constant Profile Measurements

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