Citation:

PANGAEA.965479

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Abstract:

The multibeam data set was acquired in 2021 during the Instituto Hidrográfico cruise HI 09A/20 under the guideance of Captain Franco Leitão, and is originally available through the website (https://gridmarcv.hidrografico.pt/) but also at the IHO Data Centre for Digital Bathymetry (https://www.ngdc.noaa.gov/iho/). The hydrographic survey was carried out with the NRP ALMIRANTE GAGO COUTINHO, equipped with the EM 710 and EM120 multibeam sounding systems. Positioning was assured by a SEAPATH 330+ system from SMF KONGSBERG EM710/EM120, GNSS data. Depth values are referred to ZH (0.80m from the Average Level adopted in Cape Verde). Information on data processing is unavailable as we are not the orignial authors of this data set but re-issue it by permission. The original ungridded data set contained in the .txt file was gridded to a 25m cell size using GlobalMapper, and is submitted here as an ascii grid file.

Documentation:

METADADOS202101 Levantamento Hidrográfico - CaboVerde - Montes submarinos (entre Santiagoe Maio) (2021). 202101_LH_CaboVerde_MontesSubmarinos.pdf

Coverage:

Latitude: 15.398511 * Longitude: -23.384140

Date/Time Start: 2021-01-22T00:00:00 * Date/Time End: 2021-02-01T00:00:00

Event(s):

HI_09A/20_Underway-1 * Latitude: 15.398511 * Longitude: -23.384140 * Date/Time Start: 2021-01-22T00:00:00 * Date/Time End: 2021-02-01T00:00:00 * Campaign: * Basis: NRP Almirante Gago Coutinho * Method/Device: * Comment: Coordinates refer to center of raster file and the time frame of data acquisition.

HI_09A/20_Underway-2 * Latitude: 15.398511 * Longitude: -23.384140 * Date/Time Start: 2021-01-22T00:00:00 * Date/Time End: 2021-02-01T00:00:00 * Campaign: * Basis: NRP Almirante Gago Coutinho * Method/Device: * Comment: Coordinates refer to center of raster file and the time frame of data acquisition.

Comment:

These data should not be used for navigational purposes.

Inquiries may be sent to mail@hidrografico.pt.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device
1	Binary Object	Binary		Leitão, Franco
2	Binary Object (Media Type)	Binary (Type)		Leitão, Franco
3	Binary Object (File Size)	Binary (Size)	Bytes	Leitão, Franco
4	Raster cell size	Raster cell size		Leitão, Franco	Extracted from file
5	File content	Content		Leitão, Franco
6	Horizontal datum	Horizontal datum		Leitão, Franco
7	Horizontal datum, projection stored in file	Horizontal datum in file		Leitão, Franco	Extracted from file
8	Vertical datum	Vertical datum		Leitão, Franco
9	Longitude, westbound	Longitude west		Leitão, Franco	Extracted from file
10	Longitude, eastbound	Longitude east		Leitão, Franco	Extracted from file
11	Latitude, southbound	Latitude south		Leitão, Franco	Extracted from file
12	Latitude, northbound	Latitude north		Leitão, Franco	Extracted from file
13	Elevation, minimum	Elev min	m a.s.l.	Leitão, Franco	Extracted from file
14	Elevation, maximum	Elev max	m a.s.l.	Leitão, Franco	Extracted from file

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)

Size:

21 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

All files referred to in data matrix can be downloaded in one go as ZIP or TAR. Be careful: This download can be very large! To protect our systems from misuse, we require to sign up for an user account before downloading.

1 Binary	2 Binary (Type)	3 Binary (Size) [Bytes]	4 Raster cell size	5 Content	6 Horizontal datum	7 Horizontal datum in file	8 Vertical datum	9 Longitude west	10 Longitude east	11 Latitude south	12 Latitude north	13 Elev min [m a.s.l.]	14 Elev max [m a.s.l.]
Tchadona_25m.asc	text/plain	42 MBytes	0.000227deg	bathymetry raster / negative values in meters for depth measurements (= elevation)	EPSG:4326	None	unknown	-23.6900000	-23.0800000	15.2000000	15.6000000	-2887.000	-43.00
202101_CVerde_MontesSubmarinos_VRS_WGS84.txt	text/plain	84.4 MBytes		bathymetry ASCII File with header Long (DD) Lat (DD) Depth (m) / positive values in meters for depth measurements (= elevation)			unknown	-23.6851425	-23.0832186	14.8614988	15.5969611	37.556	2886.62