Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Andria Bilich"'
The U.S. National Geodetic Survey (NGS) has historically processed dual-frequency GPS observations in a double-differenced mode using the legacy software called the Program for the Adjustment of GPS Ephemerides (PAGES). As part of NGS’ modernizatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15d9af63bb8048a06dbaf8c7dca77eeb
https://doi.org/10.5194/egusphere-egu21-5556
https://doi.org/10.5194/egusphere-egu21-5556
The U.S. National Geodetic Survey (NGS) is undertaking a project to replace and modernize its global navigation satellite system (GNSS) processing software that has been in use for several decades. The goals of this project are to: 1) transition from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42b463d00cb50a4ba7a1a313ca11fdf4
https://doi.org/10.5194/egusphere-egu2020-11538
https://doi.org/10.5194/egusphere-egu2020-11538
Autor:
John Braun, Ethan Gutmann, Andria Bilich, Kristine M. Larson, Valery U. Zavorotny, Eric E. Small
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing. 3:91-99
Measurements of soil moisture at various spatial and temporal scales are needed to study the water and carbon cycles. While satellite missions have been planned to measure soil moisture at global scales, these missions also need ground-based soil moi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::88837a9b304206c0fb76813420ee770e
https://doi.org/10.1109/jstars.2009.2033612
https://doi.org/10.1109/jstars.2009.2033612
Autor:
Kristine M. Larson, Eric E. Small, Ethan Gutmann, Valery U. Zavorotny, John Braun, Andria Bilich
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing. 3:100-110
Reflected Global Positioning System (GPS) signals can be used to infer information about soil moisture in the vicinity of the GPS antenna. Interference of direct and reflected signals causes the composite signal, observed using signal-to-noise ratio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1fe85fb0b1999de3e05f619245c32927
https://doi.org/10.1109/jstars.2009.2033608
https://doi.org/10.1109/jstars.2009.2033608
Publikováno v:
Bulletin of the Seismological Society of America. 98:593-606
The 2002 Denali fault, Alaska, earthquake ( M w 7.9) caused one or more components of most broadband seismometers in western Canada to clip, yet did not trigger strong-motion instruments, thus leaving a substantial gap in the seismic record of this e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9796613b5649da0f93b7857bb6e4d2f6
https://doi.org/10.1785/0120070096
https://doi.org/10.1785/0120070096
Publikováno v:
GPS Solutions. 12:173-177
Measurements of soil moisture are important for studies of climate and weather forecasting, flood prediction, and aquifer recharge studies. Although soil moisture measurement networks exist, most are sparsely distributed and lack standardized instrum
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3525d4d151e789b89d8de51eb60a1f5
https://doi.org/10.1007/s10291-007-0076-6
https://doi.org/10.1007/s10291-007-0076-6
Publikováno v:
Journal of Geophysical Research: Solid Earth. 106:19443-19452
There are at least 30 major plate boundary segments worldwide where the plate boundary changes from subduction to strike-slip; these include six triple junctions and 24 two-plate boundaries. This study investigates earthquake seismicity in the 24 two
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2405635f0087b1a489dcba5cc59b4002
https://doi.org/10.1029/2000jb900309
https://doi.org/10.1029/2000jb900309
Publikováno v:
Seismological Research Letters. 69:117-122
INTRODUCTION On 24 March 1997 at 22:31 UTC (4:31 p.m. local time), an earthquake occurred in the vicinity of Alice, Texas. The United States Geological Survey (USGS), using stations primarily in Texas, Oklahoma, and Canada, determined the epicenter a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db59771248975b991011d8a8279166aa
https://doi.org/10.1785/gssrl.69.2.117
https://doi.org/10.1785/gssrl.69.2.117
Autor:
Valery U. Zavorotny, John Braun, Kristine M. Larson, Andria Bilich, Ethan Gutmann, Eric E. Small
Publikováno v:
Geophysical Research Letters. 35
[1] Measurements of soil moisture, both its global distribution and temporal variations, are required to study the water and carbon cycles. A global network of in situ soil moisture stations is needed to supplement datasets from satellite sensors. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc0f79a1a39e867141dfcf320db17157
https://doi.org/10.1029/2008gl036013
https://doi.org/10.1029/2008gl036013
Publikováno v:
Journal of Geophysical Research. 113
[1] Multipath, wherein a signal arrives at the receiving antenna by more than one path, is a significant and largely unmodeled source of GPS positioning error. We present a technique for mitigating specular multipath in GPS carrier phase measurements
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::49332734a2436780f04f18e347deaa8a
https://doi.org/10.1029/2007jb005194
https://doi.org/10.1029/2007jb005194