Seismic-Hazard Maps for Alaska and the Aleutian Islands: 5HZ050

Online link https://geo-nsdi.er.usgs.gov/metadata/map-i/2679/5HZ050.faq.html
Description Probabilistic seismic hazard maps were prepared for Alaska portraying peak horizontal ground acceleration and horizontal spectral response acceleration for 0.2, 0.3, and 1.0 second periods with probabilities of exceedance of 10% in 50 years and 2% in 50 y
Originators Wesson, Robert L.; Frankel, Arthur D.; Mueller, Charles S.; Harmsen, Stephen C.; and Rukstales, Kenneth S.

Related topics

States or counties

Overview of attributes

>ARC/INFO Export Unix Tar Compress format.  The files include:
>
>Filename  	Size (bytes)	Description
>
>aa_lab.e00         176920	Cross secton A-A' text labels.
>aa_xsec.e00        315541	Cross secton A-A' geologic contacts and faults.
>ball_bar.e00       4006350	Fault symbology - ball and bar on downthrown side.
>bb_lab.e00         232179	Cross secton B-B' text labels.
>bb_xsec.e00        471987	Cross secton B-B' geologic contacts and faults.
>cc_lab.e00         197352	Cross secton C-C' text labels
>cc_xsec.e00        353628	Cross secton C-C' geologic contacts and faults.
>cor_chart.e00      56422	Correlation chart of map units.
>dikes.e00          5988	Location of dikes.
>dipsym.e00         101899	Symbols displaying strike and dip of bedrock.
>drillhole.e00      66283	Selected boreholes in the study area.
>esf_exp.e00        52359	Exploratory Studies Facility alignment.
>exp_cont.e00       3584349	Geologic contacts.
>exp_flt.e00        1517057	Faults.
>exp_geol.e00       4213539	Geologic unit polygons.
>expln.e00          94092	Explanation of map units.
>fltsym.e00         107688	Symbols displaying relative horizontal movement (paired arrows), teeth on reverse faults, queries (uncertain fault location)
>folsym.e00         130991	Symbols displaying strike and dip direction of compaction foliation.
>index.e00          60132	Location map for references.
>maplines_xsec.e00  6706	Location of cross sections A-A', B-B', C-C'
>names.e00          40479	Names of physiographic features and faults.
>units.e00          1214091	Text describing geologic units.

More information can be found in the file README.EXPORT.

EXP_GEOL.PAT

Geologic unit polygons

Label Definition
UNIT_SYMBOL symbol for geologic map units
PTYPE numerical value for every map unit
DESCRIPTION Short descriptions of map units

EXPLN.PAT

Explanation of map units.

Label Definition
UNIT_SYMBOL symbol for geologic map units (same as attributes for EXP_GEOL.PAT)
DESCRIPTION Short descriptions of map units (same as attributes for EXP-GEOL.PAT)
PTYPE numerical value for every map unit (same as EXP_GEOL.PAT)

AA_XSEC.PAT

Cross secton A-A' geologic contacts and faults.

Label Definition
DESCRIPTION Short descriptions of map units (same as attributes for EXP_GEOL.PAT)
PTYPE numerical value for every map unit (same as attributes for EXP_GEOL.PAT)
UNIT_SYMBOL symbol for geologic map units (same as attributes for EXP_GEOL.PAT)

BB_XSEC

Cross secton B-B' geologic contacts and faults.

Label Definition
DESCRIPTION Short descriptions of map units (same attributes as EXP_GEOL.PAT)
PTYPE numerical value for every map unit (same attributes as EXP_GEOL.PAT)
UNIT_SYMBOL symbol for geologic map units (same attributes as EXP_GEOL.PAT)

CC_XSEC

Cross secton C-C' geologic contacts and faults.

Label Definition
DESCRIPTION Short descriptions of map units (same attributes as EXP_GEOL.PAT)
PTYPE numerical value for every map unit (same attributes as EXP_GEOL.PAT)
UNIT_SYMBOL symbol for geologic map units (same attributes as EXP_GEOL.PAT)

COR_CHART.PAT

Correlation chart of map units.

Label Definition
DESCRIPTION Short descriptions of map units (same attributes as EXP_GEOL.PAT)
PTYPE numerical value for every map unit (same attributes as EXP_GEOL.PAT)
UNIT_SYMBOL symbol for geologic map units (same attributes as EXP_GEOL.PAT)

EXP.FLT.AAT

Faults

Label Definition
LTYPE Line type
DESCRIPTION Short description of faults

EXP.CONT.AAT

Geologic contacts

Label Definition
LTYPE Line type
DESCRIPTION Short descriptions of contacts

AA_XSEC.AAT

Line type of cross-sections

Label Definition
LTYPE Line type