Sapelo Island (1800s-2006)
The AMBUR package for R was used to analyze historical shoreline movements along Sapelo Island and its neighboring creeks. Historical shorelines from 1857, 1868 and 1942 to 2003 were analyzed and trends of erosion and accretion were mapped.Oldest Shoreline: oldest shoreline analyzed, Youngest Shoreline: youngest shoreline analyzed, Net Change: change in meters between oldest and youngest shoreline, EPR: End Point Rate (m/yr).
[{'name': 'OBJECTID', 'type': 'esriFieldTypeOID', 'alias': 'OBJECTID', 'domain': None}, {'name': 'Shape', 'type': 'esriFieldTypeGeometry', 'alias': 'Shape', 'domain': None}, {'name': 'Net_Change', 'type': 'esriFieldTypeDouble', 'alias': 'Net Change (m)', 'domain': None}, {'name': 'EPR', 'type': 'esriFieldTypeDouble', 'alias': 'Endpoint Rate (m/yr)', 'domain': None}, {'name': 'EPR_Error', 'type': 'esriFieldTypeDouble', 'alias': 'Endpoint Rate Error (m/yr)', 'domain': None}, {'name': 'Elapsed_Years', 'type': 'esriFieldTypeSingle', 'alias': 'Elapsed Years', 'domain': None}, {'name': 'Shoreline_Old', 'type': 'esriFieldTypeSmallInteger', 'alias': 'Shoreline Old', 'domain': None}, {'name': 'Shoreline_Young', 'type': 'esriFieldTypeSmallInteger', 'alias': 'Shoreline Young', 'domain': None}]
[{'name': 'FDO_Shape', 'fields': 'Shape', 'isAscending': True, 'isUnique': False, 'description': ''}]
[]
{'renderer': {'type': 'classBreaks', 'field': 'EPR', 'classificationMethod': 'esriClassifyManual', 'minValue': -12.97, 'classBreakInfos': [{'symbol': {'type': 'esriSMS', 'style': 'esriSMSCircle', 'color': [255, 0, 0, 255], 'size': 6, 'angle': 0, 'xoffset': 0, 'yoffset': 0, 'outline': None}, 'classMaxValue': 0, 'label': 'Erosion', 'description': ''}, {'symbol': {'type': 'esriSMS', 'style': 'esriSMSCircle', 'color': [0, 92, 230, 255], 'size': 6, 'angle': 0, 'xoffset': 0, 'yoffset': 0, 'outline': None}, 'classMaxValue': 16.85, 'label': 'Accretion', 'description': ''}]}, 'transparency': 0, 'labelingInfo': None}
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