Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
GENERATION OF COASTAL MARSH TOPOGRAPHY WITH RADAR AND GROUND-BASED MEASUREMENTS (REPRINTED FROM THE JOURNAL-OF-COASTAL-RESEARCH, VOL 13, PG1335-1341, 1996)
Autore:
RAMSEY EW; NELSON GA; LAINE SC; KIRKMAN RG; TOPHAM W;
Indirizzi:
US GEOL SURVEY,NATL WETLANDS RES CTR,700 CAJUNDOME BLVD LAFAYETTE LA 70506 JOHNSON CONTROLS WORLD SERV INC LAFAYETTE LA 70506
Titolo Testata:
Journal of coastal research
fascicolo: 3, volume: 14, anno: 1998,
pagine: 1158 - 1164
SICI:
0749-0208(1998)14:3<1158:GOCMTW>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
SEDIMENTATION; STORMS; BAY;
Keywords:
MICROELEVATION DETECTION; FLOODING; REMOTE SENSING; SURFACE GRIDDING MODEL; COASTAL MARSH; WETLAND;
Tipo documento:
Reprint
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
16
Recensione:
Indirizzi per estratti:
Citazione:
E.W. Ramsey et al., "GENERATION OF COASTAL MARSH TOPOGRAPHY WITH RADAR AND GROUND-BASED MEASUREMENTS (REPRINTED FROM THE JOURNAL-OF-COASTAL-RESEARCH, VOL 13, PG1335-1341, 1996)", Journal of coastal research, 14(3), 1998, pp. 1158-1164

Abstract

A topographic surface of a low lying coastal marsh was created by using three flood extent vectors digitized from ERS-1 SAR images and two elevation contours from U.S. Geological Survey topographic quadrangles. Point measurement of water depth at the times of the SAR collectionsallowed conversion of the radar measured flood extent vectors to topographic contours. Generation of the topographic surface was accomplished with a surface gridding algorithm, SAR and on-site measures. Errorsin the generated topography were mainly associated with the lack of input contours covering narrow to broad plateaus and topographic highs and lows. The misplacement of SAR derived flood extent vectors also caused errors in sparsely vegetated high marsh, at convoluted marsh-forest boundaries, and at topographic depressions. Overall, the standard deviation of differences between measured and predicted elevations at 747 points was 19 cm. Excluding the above mentioned abrupt boundaries and topographic highs and lows outside the range of available contours,standard deviation differences averaged about 14 cm, but most often averaged about 8 cm. This suggested a 5 to 9 factor improvement over the 150 cm topographic resolution currently available for this area.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/07/20 alle ore 01:10:20