Larry G. Ward, UNH Center for Coastal and Ocean Mapping/ Joint Hydrographic Center, Research Associate Professor
Maxlimer Vallee-Anziani, UNH Center for Coastal and Ocean Mapping/ Joint Hydrographic Center, Research Assistant
Zachary S. McAvoy, UNH Center for Coastal and Ocean Mapping/ Joint Hydrographic Center, Research Assistant
20160630
1971_Mills_UTM19N
Vector Digital Data Set (Point)
For more details see Ward, L.G., McAvoy, Z.S., Vallee-Anziani, M., and Morrison, R.C., 2021, Surficial Geology of the Continental Shelf off New Hampshire: Morphologic Features and Surficial Sediments: BOEM/New Hampshire Cooperative Agreement (Contract M14ACOOO10) Technical Report, Department of Interior, Bureau of Ocean Energy Management, Marine Minerals Division, 45600 Woodland Road, Sterling, VA, 20166, 46 pp.
The UNH CCOM/JHC Historical Geophysical Database developed for this study is relatively large (and entirely from existing sources). Nevertheless, the coverage is somewhat inconsistent in quality and distribution. The surveys were conducted on the NH continental shelf from the early 1970s until 2015 by a number of investigators from UNH. Although the archived database is relatively large, the coverage is somewhat inconsistent in quality and distribution. In addition, the positioning uncertainty of the station locations varies over an order of magnitude and is estimated for each sample (uncertainty category key is given below). Also, the distribution of sample locations is uneven. The most recent studies which have the most accurate positioning and the highest quality data tend to be concentrated in specific areas and not evenly distributed as would be expected. This product is a series of shapefiles containing grain size analysis results from over 40 years of studies conducted by or in collaboration with the University of New Hampshire. Position Uncertainty Categories:
Category 1: GNSS – Corrected with RTK or Postprocessing: Less than 30 m
Category 2: GNSS – Without corrections: 30 m to 50 m
Category 3: Loran C: 185 m to 463 m
Category 4: Radar, Charts, and Dead Reckoning: 250 to 1000 m
One of the overarching goals of the Cooperative Agreement between the Bureau of Ocean Energy Management (BOEM) and the University of New Hampshire (UNH) Center for Coastal and Ocean Mapping/ Joint Hydrographic Center (CCOM/JHC), and the New Hampshire Geological Survey (NHGS) is to delineate and map potential sand and gravel deposits on the New Hampshire shelf. This task can only be accomplished with extensive ground truth information. This GIS formatted database is a primary resource for any surficial sediments or geologic mapping effort.
The individual student theses and other collaborative research efforts conducted by the University of New Hampshire are the primary source of information for this database. For more information see: Ward, L.G., McAvoy, Z.S., Vallee-Anziani, M., and Morrison, R.C., 2021, Surficial Geology of the Continental Shelf off New Hampshire: Morphologic Features and Surficial Sediments: BOEM/New Hampshire Cooperative Agreement (Contract M14ACOOO10) Technical Report, Department of Interior, Bureau of Ocean Energy Management, Marine Minerals Division, 45600 Woodland Road, Sterling, VA, 20166, 46 pp.
19710301
20150601
publication date
Irregular
-70.748333
-70.336667
43.111667
42.943333
ISO 19115 Topic Category
environment
geoscientificInformation
None
Geology
Gravel
BOEM
Gravelly
Unconsolidated sediments
Coastal sediments
Sediment database
Marine sediments
Folk
muddy Sand
Sea-floor sediments
UNH
sandy Mud
Gravel mixes
Sand
Surficial sediments
Marine minerals
Wentworth scale
GRADISTAT
Mud
None
Sea-floor
Outer continental shelf
Western Gulf of Maine
Atlantic ocean
Inner harbor
Continental shelf
Isles of Shoals
New Hampshire and vicinity
Jeffreys Ledge
Nearshore
Southern Maine
Inner continental shelf
Northern Massachusetts
Coast and ocean
North Atlantic
None
1970s
2010s
1980s
2000s
1990s
Public domain data from the University of New Hampshire Center for Coastal and Ocean Mapping / NOAA Joint Hydrographic Center are freely distributable with proper metadata and source attribution. Please recognize the University of New Hampshire Center for Coastal and Ocean Mapping / NOAA Joint Hydrographic Center.
Public domain data from the University of New Hampshire Center for Coastal and Ocean Mapping / NOAA Joint Hydrographic Center are freely distributable with proper metadata and source attribution. Please recognize the University of New Hampshire Center for Coastal and Ocean Mapping / NOAA Joint Hydrographic Center.
UNH Center for Coastal and Ocean Mapping/ Joint Hydrographic Center
Larry G. Ward
Research Associate Professor
physical
24 Colovos Road
Durham
New Hampshire
03824
(603) 862-2337
lgward@ccom.unh.edu
The development of the "Surficial Geology of the Continental Shelf off New Hampshire: Morphologic Features and Surficial Sediments" report, maps, and all related databases were supported by BOEM Award Number M14ACOOO10 and UNH/NOAA Joint Hydrographic Center Award Number NA15NOS4000200. A number of colleagues at the University of New Hampshire Center for Coastal and Ocean Mapping/Joint Hydrographic Center provided scientific and technical support, advice, and insight including Paul Johnson (Data Management), Colleen Mitchell (Graphics Design and Editing), Will Fessenden (IT Group), and Larry Mayer, Giuseppe Masetti, Michael Bogonko, and Erin Nagel (Faculty and Research Scientists).
Original dataset reference:
Mills, T.E. 1971. Inner Continental Shelf Sediments Off New Hampshire. Unpublished M.S. Thesis. University of New Hampshire, Durham. 64 pp.
Esri ArcGIS 10.7.1 (Build 11595) Service Pack N/A (Build N/A)
No formal attribute accuracy tests were conducted.
No formal logical accuracy tests were conducted.
Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details.
A formal accuracy assessment of the horizontal positional information in the data set has not been conducted.
A formal accuracy assessment of the vertical positional information in the data set has either not been conducted, or is not applicable.
A surficial sediment database was developed in Excel and is composed of the results of several studies and theses generated at the University of New Hampshire since the early 1970s until summer 2015.
20150701
The individual surveys from the surficial sediments database were formatted according to a single scheme and converted into point feature shapefiles in ArcGIS 10.3
20160608
Point
Simple
FALSE
0
TRUE
FALSE
0.0197351148
0.0268629666
Decimal seconds
D_WGS_1984
WGS_1984
6378137.0
298.257223563
T1971_Mills_UTM19N
Table containing attribute information associated with the data set.
Producer defined
Feature Class
0
OBJECTID
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
FID
OID
4
0
0
Shape
Feature geometry.
Esri
Coordinates defining the features.
Shape
Geometry
0
0
0
Rel_Rank_P
Reliability ranking for Positioning
Position Uncertainty Categories:
Category 1: GNSS – Corrected with RTK or Postprocessing: Less than 30 m
Category 2: GNSS – Without corrections: 30 m to 50 m
Category 3: Loran C: 185 m to 463 m
Category 4: Radar, Charts, and Dead Reckoning: 250 to 1000 m
Producer defined
4
Positioning from dead reckoning positioning absolute accuracy between 250 meters and 1000 meters
Producer defined
Rel_Rank_P
Integer
4
0
0
Station
Current sediment station number as defined in the current New Hampshire continental shelf sediment database. The prefix letters correspond to the collection information i.e. who collected the data and in some cases where the data was collected. The numerical suffix corresponds to the original sediment station number from the original collection.
Producer defined
MS = Miles 1971
WFS = Flight 1982
JFS = Felzenburg 2009
U-GBE = Armstrong 1974
L-GBE = Short 1998
L-GBE2 = Ward 1995
HSH = Hampton Seabrook Harbor - Unpublished
MMS_Y2 = Birch 1986
MMS_Y4 = Ward 1989
MMS_Y8 = Ward 1993
MMS_Y10 = Ward 1996
OOA = Ward - Unpublished
JL = Jeffreys Ledge 2002 JLNR = Jeffreys Ledge No Recovery 2002
NB = Newbex, Webber and Ward 2015
Station
String
254
0
0
O_Station
Original sediment station number as defined by the collector
Producer defined
Original station scheme by researcher
O_Station
String
254
0
0
Latitude
Latitude coordinate of sample location (decimal degrees)
UNH CCOM/JHC
42.943333
43.111667
Decimal degrees
Latitude
Double
8
0
0
Longitude
Longitude coordinate of sample location (decimal degrees)
UNH CCOM/ JHC
-70.748333
-70.336667
Decimal degrees
Longitude
Double
8
0
0
Depth_m_
Depth of water in meters of the sample at the time collected
UNH CCOM/JHC
9
117
meters
Depth_m_
Integer
4
0
0
Date_Col
Date sample was collected
Producer defined
June 5 to Nov 30, 1972
Calender date of sample collection
Producer defined
Date_Col
String
254
0
0
Date_Proc
Date grain size analysis was started if known.
UNH CCOM/JHC
{Null Value / Empty Field Entry}
Unknown
Producer defined
Date_Proc
String
254
0
0
Sampler
Device used to collect sample being either a gravity core (GC), Shipeck (Sh), or Box core (BC).
UNH CCOM/JHC
Shipek
Shipeck
Producer defined
Sampler
String
254
0
0
Folk_TextG
Textural group based on % Gravel %Sand and %Mud from Gradistat (Blott and Pye,2001), from terminology from Folk (1954) to describe any mix of loose mineral substrate that occurs at any range of sizes, and from the ternary diagram of Folk (1980).
CMECS FGDC (2012), Folk (1954, 1980)
{Null Value / Empty Field Entry}
Unknown
Producer defined
Gravel
Geologic Substrate surface layer contains > 80% Gravel (particles 2 millimeters to < 4,096 millimeters diameter).
CMECS FGDC (2012), Folk (1954, 1980)
Gravelly Mud
Geologic Substrate is 5% to < 30% Gravel, and the remaining Sand-Mud mix is 50% or more Mud.
CMECS FGDC (2012), Folk (1954, 1980)
Gravelly Muddy Sand
Geologic Substrate is 5% to < 30% Gravel, and the remaining Sand-Mud mix is 50% to < 90% Sand.
CMECS FGDC (2012), Folk (1954, 1980)
Gravelly Sand
Geologic Substrate is 5% to < 30% Gravel, and the remaining Sand-Mud mix is 90% or more Sand.
CMECS FGDC (2012), Folk (1954, 1980)
Mud
Geologic Substrate surface layer contains no trace of Gravel and is composed of 90% or more Mud (particles less than 0.0625 millimeters in diameter); the remainder (< 10%) is composed of Sand (particles 0.0625 millimeters to < 2 millimeters in diameter).
CMECS FGDC (2012), Folk (1954, 1980)
Muddy Gravel
Geologic Substrate is 30% to < 80% Gravel, with Mud composing 50% or more of the remaining Mud-Sand mix.
CMECS FGDC (2012), Folk (1954, 1980)
Muddy Sand
Geologic Substrate surface layer contains no trace of Gravel and is composed of 50% to < 90% Sand (particles 0.0625 millimeters to 2 millimeters in diameter); the remainder is composed of Mud (particles less than 0.0625 millimeters in diameter).
CMECS FGDC (2012), Folk (1954, 1980)
Muddy Sandy Gravel
Geologic Substrate is 30% to < 80% Gravel, with Sand composing from 50% to < 90% of the remaining Sand-Mud mix.
CMECS FGDC (2012), Folk (1954, 1980)
Sand
Geologic Substrate surface layer contains no trace of Gravel and is composed of > 90% Sand (particles 0.0625 millimeters to < 2 millimeters in diameter).
CMECS FGDC (2012), Folk (1954, 1980)
Sandy Gravel
Geologic Substrate is 30% to < 80% Gravel, with Sand composing 90% or more of the remaining Sand-Mud mix.
CMECS FGDC (2012), Folk (1954, 1980)
Sandy Mud
Geologic Substrate surface layer contains no trace of Gravel and is composed of 10% to < 50% Sand; the remainder is composed of Mud (particles less than 0.0625 millimeters in diameter).
CMECS FGDC (2012), Folk (1954, 1980)
Folk_TextG
String
254
0
0
FTG_Abbrev
Abbreviation for sediment textural group based on % Gravel %Sand and %Mud from Gradistat (Blott and Pye,2001), from terminology from Folk (1954) to describe any mix of loose mineral substrate that occurs at any range of sizes, and from the ternary diagram of Folk (1980).
CMECS FGDC (2012), Folk (1954, 1980)
{Null Value / Empty Field Entry}
Unknown
Producer defined
G
Gravel
CMECS FGDC (2012), Folk (1954, 1980)
gM
gravelly Mud
CMECS FGDC (2012), Folk (1954, 1980)
gmS
gravelly muddy Sand
CMECS FGDC (2012), Folk (1954, 1980)
gS
gravelly Sand
CMECS FGDC (2012), Folk (1954, 1980)
M
Mud
CMECS FGDC (2012), Folk (1954, 1980)
mG
muddy Gravel
CMECS FGDC (2012), Folk (1954, 1980)
mS
muddy Sand
CMECS FGDC (2012), Folk (1954, 1980)
msG
muddy sandy Gravel
CMECS FGDC (2012), Folk (1954, 1980)
S
Sand
CMECS FGDC (2012), Folk (1954, 1980)
sG
sandy Gravel
CMECS FGDC (2012), Folk (1954, 1980)
sM
sandy Mud
CMECS FGDC (2012), Folk (1954, 1980)
FTG_Abbrev
String
254
0
0
SZC_Folk_T
"Textural group based on %Sand %Silt (Z) %Clay ratio from Ternary Diagram by Folk (1980)"
Producer defined
{Null Value / Empty Field Entry}
Unknown
Producer defined
Mud
Geologic Substrate surface layer contains no trace of Gravel and is composed of 90% or more Mud (particles less than 0.0625 millimeters in diameter); the remainder (< 10%) is composed of Sand (particles 0.0625 millimeters to < 2 millimeters in diameter).
CMECS FGDC (2012), Folk (1954, 1980)
Muddy Sand
Geologic Substrate surface layer contains no trace of Gravel and is composed of 50% to < 90% Sand (particles 0.0625 millimeters to 2 millimeters in diameter); the remainder is composed of Mud (particles less than 0.0625 millimeters in diameter).
CMECS FGDC (2012), Folk (1954, 1980)
Sand
Geologic Substrate surface layer contains no trace of Gravel and is composed of > 90% Sand (particles 0.0625 millimeters to < 2 millimeters in diameter).
CMECS FGDC (2012), Folk (1954, 1980)
Sandy Mud
Geologic Substrate surface layer contains no trace of Gravel and is composed of 10% to < 50% Sand; the remainder is composed of Mud (particles less than 0.0625 millimeters in diameter).
CMECS FGDC (2012), Folk (1954, 1980)
Sandy Silt
Geologic Substrate surface layer shows no trace of Gravel and contains 10% to < 50% Sand; the remaining Silt-Clay mix is 67% or more Silt.
CMECS FGDC (2012), Folk (1954, 1980)
Silty Sand
Geologic Substrate surface layer shows no trace of Gravel and contains 50% to < 90% Sand; the remaining Silt-Clay mix is 67% or more Silt.
CMECS FGDC (2012), Folk (1954, 1980)
SZC_Folk_T
String
254
0
0
SZC_Abbrev
Abbreviation for Textural Group Based on %Sand %Silt (Z) %Clay from Ternary Diagram (Folk 1980).
Producer defined
{Null Value / Empty Field Entry}
Unknown
Producer defined
M
Mud
CMECS FGDC (2012), Folk (1954, 1980)
mS
muddy Sand
CMECS FGDC (2012), Folk (1954, 1980)
S
Sand
CMECS FGDC (2012), Folk (1954, 1980)
sM
sandy Mud
CMECS FGDC (2012), Folk (1954, 1980)
sZ
sandy Silt
CMECS FGDC (2012), Folk (1954, 1980)
zS
silty Sand
CMECS FGDC (2012), Folk (1954, 1980)
SZC_Abbrev
String
254
0
0
Went_SedCl
Sediment sample classification based on mean phi size from Gradistat scale (Blott and Pye,2001) converted to Wentworth scale (Ward et al. in review) or directly from Wentworth Scale (Wentworth, 1922).
Blott and Pye (2001), Ward (in review), and Wentworth (1922).
Coarse Sand
In millimeters: 0.5 to <1
In Phi: 1 to <0
Blott and Pye (2001), Ward (in review), and Wentworth (1922).
Coarse Silt
In millimeters: 0.031 to 0.0625
In Phi: 5.0 to 4.0
Blott and Pye (2001), Ward (in review), and Wentworth (1922).
Fine Sand
In millimeters: 0.125 to 0.25
In Phi: 3.0 to 2.0
Blott and Pye (2001), Ward (in review), and Wentworth (1922).
Fine Silt
In millimeters: .0078 to .0156
In Phi: 7.0 to 6.0
Blott and Pye (2001), Ward (in review), and Wentworth (1922).
Granule Gravel
In millimeters: 2.0 to 4.0
In Phi: -1.0 to -2.0
Blott and Pye (2001), Ward (in review), and Wentworth (1922).
Medium Sand
In millimeters: 0.25 to 0.50
In Phi: 2.0 to 1.0
Blott and Pye (2001), Ward (in review), and Wentworth (1922).
Medium Silt
In millimeters: 0.0156 to 0.031
In Phi: 6.0 to 5.0
Blott and Pye (2001), Ward (in review), and Wentworth (1922).
Pebble Gravel
In millimeters: 4.0 to 64
In Phi: -2.0 to -6.0
Blott and Pye (2001), Ward (in review), and Wentworth (1922).
Very Coarse Sand
In millimeters: 1.0 to 2.0
In Phi: 0.0 to -1.0
Blott and Pye (2001), Ward (in review), and Wentworth (1922).
Very Fine Sand
In millimeters: .0625 to 0.125
In Phi: 4.0 to 3.0
Blott and Pye (2001), Ward (in review), and Wentworth (1922).
Very Fine Silt
In millimeters: 0.0039 to 0.0078
In Phi: 8.0 to 7.0
Blott and Pye (2001), Ward (in review), and Wentworth (1922).
Went_SedCl
String
254
0
0
WSC_Abbrev
Abbreviation of sediment sample classification based on mean phi size from Gradistat scale (Blott and Pye,2001) converted to Wentworth scale (Ward et al. in review) or directly from Wentworth Scale (Wentworth, 1922).
Blott and Pye (2001), Ward (in review), and Wentworth (1922).
cS
Coarse Sand
Blott and Pye (2001), Ward (in review), and Wentworth (1922).
cZ
Coarse Silt
Blott and Pye (2001), Ward (in review), and Wentworth (1922).
fS
Fine Sand
Blott and Pye (2001), Ward (in review), and Wentworth (1922).
fZ
Fine Silt
Blott and Pye (2001), Ward (in review), and Wentworth (1922).
grG
Granule Gravel
Blott and Pye (2001), Ward (in review), and Wentworth (1922).
mdS
Medium Sand
Blott and Pye (2001), Ward (in review), and Wentworth (1922).
mdZ
Medium Silt
Blott and Pye (2001), Ward (in review), and Wentworth (1922).
pB
Pebble Gravel
Blott and Pye (2001), Ward (in review), and Wentworth (1922).
vcG
Very Coarse Gravel
Blott and Pye (2001), Ward (in review), and Wentworth (1922).
vfS
Very Fine Sand
Blott and Pye (2001), Ward (in review), and Wentworth (1922).
vfZ
Very Fine Silt
Blott and Pye (2001), Ward (in review), and Wentworth (1922).
WSC_Abbrev
String
254
0
0
Sorting
Sorting expressed in phi units, a geometric conversion used in geologic studies to place equal importance on small differences in fine-grained sediments and large differences in coarse-grained sediments classification of the sediment sample from Gradistat (Blott and Pye, 2001). Sorting, is a measure of the spread of the sizes about the mean or standard deviation of the sample, it is also expressed in phi units.
Blott and Pye (2001), Folk and Ward (1957), and Folk (1980)
Extremely Poorly Sorted
A standard deviation abouth the mean > 4.00
Blott and Pye (2001), Folk and Ward (1957), and Folk (1980)
Moderately Sorted
A standard deviation abouth the mean0.70 to 1.00
Blott and Pye (2001), Folk and Ward (1957), and Folk (1980)
Moderately Well Sorted
A standard deviation abouth the mean 0.5 to 0.7
Blott and Pye (2001), Folk and Ward (1957), and Folk (1980)
Poorly Sorted
A standard deviation abouth the mean 1.00 to 2.00
Blott and Pye (2001), Folk and Ward (1957), and Folk (1980)
Very Poorly Sorted
A standard deviation abouth the mean 2.00 to 4.00
Blott and Pye (2001), Folk and Ward (1957), and Folk (1980)
Very Well Sorted
A standard deviation abouth the mean < 0.35
Blott and Pye (2001), Folk and Ward (1957), and Folk (1980)
Well Sorted
A standard deviation abouth the mean 0.35 to 0.50
Blott and Pye (2001), Folk and Ward (1957), and Folk (1980)
Sorting
String
254
0
0
Abbrev
Abbreviation of sorting expressed in phi units, a geometric conversion used in geologic studies to place equal importance on small differences in fine-grained sediments and large differences in coarse-grained sediments classification of the sediment sample from Gradistat (Blott and Pye, 2001). Sorting, is a measure of the spread of the sizes about the mean or standard deviation of the sample, it is also expressed in phi units.
Blott and Pye (2001), Folk and Ward (1957), and Folk (1980)
EPS
Extremely Poorly Sorted
Blott and Pye (2001), Folk and Ward (1957), and Folk (1980)
MS
Moderately Sorted
Blott and Pye (2001), Folk and Ward (1957), and Krumbein and Pettijohn (1938)
MWS
Moderately Well Sorted
Blott and Pye (2001), Folk and Ward (1957), and Krumbein and Pettijohn (1938)
PS
Poorly Sorted
Blott and Pye (2001), Folk and Ward (1957), and Krumbein and Pettijohn (1938)
VPS
Very Poorly Sorted
Blott and Pye (2001), Folk and Ward (1957), and Krumbein and Pettijohn (1938)
VWS
Very Well Sorted
Blott and Pye (2001), Folk and Ward (1957), and Krumbein and Pettijohn (1938)
WS
Well Sorted
Blott and Pye (2001), Folk and Ward (1957), and Krumbein and Pettijohn (1938)
Abbrev
String
254
0
0
GravelPerc
Percent of geologic substrate surface layer that contains Gravel (particles 2 millimeters to < 4,096 millimeters diameter).
CMECS FGDC (2012)
0
99
Percentage
GravelPerc
Integer
4
0
0
SandPerc
Percent of geologic substrate surface layer that is composed of Sand (particles 0.0625 millimeters to < 2 millimeters in diameter).
CMECS FGDC (2012)
0
99
Percentage
SandPerc
Integer
4
0
0
MudPerc
Percent of geologic substrate surface layer that contains Mud (particles less than 0.0625 millimeters in diameter
CMECS FGDC (2012)
0
97
Percentage
MudPerc
Integer
4
0
0
SiltPerc
Percent of geological substrate that contains Silt(particles 0.004 to 0.0625 millimeters in diameter, or >4 to 8 phi)
CMECS FGDC (2012)
0
66
Percentage
SiltPerc
Integer
4
0
0
ClayPerc
Percent of geological substrate that contains Clay (particles less than 0.004 millimeters in diameter, or > 8 phi)
CMECS FGDC (2012)
0
45
Percentage
ClayPerc
Integer
4
0
0
Mean_phi
The mean or average grain size in Phi units
Producer defined
-3
7.6
Phi scale
Mean_phi
Double
8
0
0
Mean_mm
The mean or average grain size in millimeters
Producer defined
0.005
8
Milimeters
Mean_mm
Double
8
0
0
Sorting_Ph
The sorting or grain size variation of a sample by encompassing the largest parts of the size distribution as measured by a cumulative curve (Folk, 1980) Measure in phi units
Producer defined
0.29
5.15
Phi scale
Sorting_Ph
Double
8
0
0
Skewness
Skewness is a measure of the symmetry about the mean with positive values indicating skewing towards fines and negative values skewing towards coarse sediments. Skewness is dimensionless.
Blott and Pye (2001) Folk (1980)
-0.7
0.9
Skewness
Double
8
0
0
Wt_gm
Wt_gm
String
254
0
0
Ox_perc
Ox_perc
Double
8
0
0
Field26
Field26
String
254
0
0
Kurtosis
Kurtosis
Double
8
0
0
Comments
Comments
String
254
0
0
Field14
Field14
String
254
0
0
Field10
Field10
String
254
0
0
Field9
Field9
String
254
0
0
LOI_Perc
LOI_Perc
Double
8
0
0
OBJECTID_1
OBJECTID
Integer
4
0
0
No_recover
No_recover
String
254
0
0
Sort_Phi
Sort_Phi
Double
8
0
0
MeanPhi
MeanPhi
String
10
0
0
Grad_SedNa
Grad_SedNa
String
254
0
0
GSN_Abbrev
GSN_Abbrev
String
254
0
0
Went_SedNa
Went_SedNa
String
254
0
0
WSN_Abbrev
WSN_Abbrev
String
254
0
0
Grad_SedCl
Grad_SedCl
String
254
0
0
Modes
Modes
String
254
0
0
Depth__m_
Depth__m_
String
254
0
0
SortinPhi
SortinPhi
Double
8
0
0
Wt__gm_
Wt__gm_
Double
8
0
0
WentSedNam
WentSedNam
String
50
0
0
Study_or_P
Study_or_P
String
254
0
0
Folk_SedNa
Folk_SedNa
String
254
0
0
FSN_Abbrev
FSN_Abbrev
String
254
0
0
pct_grav_f
pct_grav_f
Single
4
0
0
MERGE_SRC
MERGE_SRC
String
255
0
0
The entity and attribute information provided here describes the tabular data associated with the data set. Please review the detailed descriptions that are provided (the individual attribute descriptions) for information on the values that appear as fields/table entries of the data set.
The entity and attribute information was generated by the individual and/or agency identified as the originator of the data set. Please review the rest of the metadata record for additional details and information.
UNH Center for Coastal and Ocean Mapping/ Joint Hydrographic Center
Larry G. Ward
Research Associate Professor
physical
24 Colovos Road
Durham
New Hampshire
03824
(603) 862-2337
lgward@ccom.unh.edu
Distributor assumes no liability for misuse of data.
Vector Digital Data Set (Point)
withheld
20210513
UNH Center for Coastal and Ocean Mapping/ Joint Hydrographic Center
Zachary S. McAvoy
Research Technician
mailing and physical
24 Colovos Road
Durham
NH
03824
US
(603) 862 - 3438
zmcavoy@ccom.unh.edu
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
local time
Public domain data from the University of New Hampshire Center for Coastal and Ocean Mapping / NOAA Joint Hydrographic Center are freely distributable with proper metadata ans source attribution. Pleae recognize the University of New Hampshire Center for Coastal and Ocean Mapping / NOAA Joint Hydrographic Center
Esri ArcGIS 13.4.0.55405
Sediment_Database_1971to2015
1
-70.748333
-70.336667
43.111667
42.943333
Sediment_Database_1971to2015
002
-70.748333
-70.336667
42.943333
43.111667
1
Geographic
GCS_WGS_1984
Angular Unit: Degree (0.017453)
<GeographicCoordinateSystem xsi:type='typens:GeographicCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/3.4.0'><WKT>GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433],AUTHORITY["EPSG",4326]]</WKT><XOrigin>-400</XOrigin><YOrigin>-400</YOrigin><XYScale>999999999.99999988</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>8.983152841195215e-09</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><LeftLongitude>-180</LeftLongitude><WKID>4326</WKID><LatestWKID>4326</LatestWKID></GeographicCoordinateSystem>
20250516
09500600
20250516
09500600
20250516
10010100
1.0
TRUE
File Geodatabase Feature Class
dataset
EPSG
6.2(3.0.1)
0
20250516