{ "cells": [ { "cell_type": "markdown", "id": "385d21fd-6f63-41d8-8633-79721f90fe8d", "metadata": { "tags": [] }, "source": [ "# Caribbean - Single-beam bathymetry\n", "\n", "This dataset is a compilation of several single-beam bathymetry surveys of the\n", "Caribbean ocean displaying a wide range of tectonic activity and uneven\n", "distribution.\n", "\n", "**Source:** [NOAA NCEI](https://ngdc.noaa.gov/mgg/geodas/trackline.html)\n", "\n", "**License:** [public domain](https://ngdc.noaa.gov/ngdcinfo/privacy.html)\n", "\n", "## Notes\n", "\n", "The original data file was compressed with LZMA to save space and make it\n", "possible to upload it to this GitHub repository (see `raw/`) since there is not\n", "direct download link we could use.\n", "\n", "The raw data are in MGD77 format and include a header with metadata on each survey ([`MGD77_921744.h77t`](MGD77_921744.h77t))" ] }, { "cell_type": "code", "execution_count": 1, "id": "34fa5814-2463-44eb-97a1-9aa57670e3df", "metadata": {}, "outputs": [], "source": [ "import os\n", "from pathlib import Path\n", "import numpy as np\n", "import pandas as pd\n", "import verde as vd\n", "import pooch\n", "import pyproj\n", "import pygmt" ] }, { "cell_type": "markdown", "id": "86ca37f7-c83c-4741-941b-27c29f6d70f8", "metadata": {}, "source": [ "## Read the data\n", "\n", "Use pandas to read the data." ] }, { "cell_type": "code", "execution_count": 2, "id": "6bbd81fa-0f94-46e0-b458-a324295b6e2b", "metadata": {}, "outputs": [ { "data": { "text/html": [ "
\n", " | survey_id | \n", "latitude | \n", "longitude | \n", "bathymetry_m | \n", "
---|---|---|---|---|
0 | \n", "FM0501 | \n", "24.77290 | \n", "-89.58530 | \n", "-3559.0 | \n", "
1 | \n", "FM0501 | \n", "24.76070 | \n", "-89.57550 | \n", "-3561.0 | \n", "
2 | \n", "FM0501 | \n", "24.74840 | \n", "-89.56560 | \n", "-3555.0 | \n", "
3 | \n", "FM0501 | \n", "24.73600 | \n", "-89.55570 | \n", "-3553.0 | \n", "
4 | \n", "FM0501 | \n", "24.72380 | \n", "-89.54580 | \n", "-3553.0 | \n", "
... | \n", "... | \n", "... | \n", "... | \n", "... | \n", "
2354729 | \n", "EW0003 | \n", "9.92284 | \n", "-84.72557 | \n", "-20.0 | \n", "
2354730 | \n", "EW0003 | \n", "9.92282 | \n", "-84.72565 | \n", "-20.0 | \n", "
2354731 | \n", "EW0003 | \n", "9.92283 | \n", "-84.72570 | \n", "-20.0 | \n", "
2354732 | \n", "EW0003 | \n", "9.92284 | \n", "-84.72574 | \n", "-21.0 | \n", "
2354733 | \n", "EW0003 | \n", "9.92286 | \n", "-84.72576 | \n", "-20.0 | \n", "
2354734 rows × 4 columns
\n", "\n", " | survey_id | \n", "latitude | \n", "longitude | \n", "bathymetry_m | \n", "
---|---|---|---|---|
0 | \n", "86005311 | \n", "16.09652 | \n", "-61.52117 | \n", "-187.0 | \n", "
1 | \n", "86005311 | \n", "16.09415 | \n", "-61.52104 | \n", "-177.0 | \n", "
2 | \n", "86005311 | \n", "16.09177 | \n", "-61.52091 | \n", "-185.0 | \n", "
3 | \n", "86005311 | \n", "16.08940 | \n", "-61.52078 | \n", "-188.0 | \n", "
4 | \n", "86005311 | \n", "16.08703 | \n", "-61.52066 | \n", "-192.0 | \n", "
... | \n", "... | \n", "... | \n", "... | \n", "... | \n", "
472812 | \n", "JR336 | \n", "15.28529 | \n", "-57.01258 | \n", "-5275.9 | \n", "
472813 | \n", "JR336 | \n", "15.28705 | \n", "-57.00994 | \n", "-5276.9 | \n", "
472814 | \n", "JR336 | \n", "15.28883 | \n", "-57.00732 | \n", "-5277.8 | \n", "
472815 | \n", "JR336 | \n", "15.29057 | \n", "-57.00467 | \n", "-5277.0 | \n", "
472816 | \n", "JR336 | \n", "15.29234 | \n", "-57.00203 | \n", "-5276.5 | \n", "
472817 rows × 4 columns
\n", "\n", " | survey_id | \n", "latitude | \n", "longitude | \n", "bathymetry_m | \n", "
---|---|---|---|---|
0 | \n", "86005311 | \n", "16.09652 | \n", "-61.52117 | \n", "-187.0 | \n", "
1 | \n", "86005311 | \n", "16.09415 | \n", "-61.52104 | \n", "-177.0 | \n", "
2 | \n", "86005311 | \n", "16.09177 | \n", "-61.52091 | \n", "-185.0 | \n", "
3 | \n", "86005311 | \n", "16.08940 | \n", "-61.52078 | \n", "-188.0 | \n", "
4 | \n", "86005311 | \n", "16.08703 | \n", "-61.52066 | \n", "-192.0 | \n", "
... | \n", "... | \n", "... | \n", "... | \n", "... | \n", "
294316 | \n", "JR336 | \n", "15.28529 | \n", "-57.01258 | \n", "-5275.9 | \n", "
294317 | \n", "JR336 | \n", "15.28705 | \n", "-57.00994 | \n", "-5276.9 | \n", "
294318 | \n", "JR336 | \n", "15.28883 | \n", "-57.00732 | \n", "-5277.8 | \n", "
294319 | \n", "JR336 | \n", "15.29057 | \n", "-57.00467 | \n", "-5277.0 | \n", "
294320 | \n", "JR336 | \n", "15.29234 | \n", "-57.00203 | \n", "-5276.5 | \n", "
294321 rows × 4 columns
\n", "\n", " | survey_id | \n", "latitude | \n", "longitude | \n", "bathymetry_m | \n", "
---|---|---|---|---|
0 | \n", "86005311 | \n", "16.09652 | \n", "-61.52117 | \n", "-187 | \n", "
1 | \n", "86005311 | \n", "16.09415 | \n", "-61.52104 | \n", "-177 | \n", "
2 | \n", "86005311 | \n", "16.09177 | \n", "-61.52091 | \n", "-185 | \n", "
3 | \n", "86005311 | \n", "16.08940 | \n", "-61.52078 | \n", "-188 | \n", "
4 | \n", "86005311 | \n", "16.08703 | \n", "-61.52066 | \n", "-192 | \n", "
... | \n", "... | \n", "... | \n", "... | \n", "... | \n", "
294316 | \n", "JR336 | \n", "15.28529 | \n", "-57.01258 | \n", "-5276 | \n", "
294317 | \n", "JR336 | \n", "15.28705 | \n", "-57.00994 | \n", "-5277 | \n", "
294318 | \n", "JR336 | \n", "15.28883 | \n", "-57.00732 | \n", "-5278 | \n", "
294319 | \n", "JR336 | \n", "15.29057 | \n", "-57.00467 | \n", "-5277 | \n", "
294320 | \n", "JR336 | \n", "15.29234 | \n", "-57.00203 | \n", "-5276 | \n", "
294321 rows × 4 columns
\n", "\n", " | survey_id | \n", "latitude | \n", "longitude | \n", "bathymetry_m | \n", "
---|---|---|---|---|
0 | \n", "86005311 | \n", "16.09652 | \n", "-61.52117 | \n", "-187 | \n", "
1 | \n", "86005311 | \n", "16.09415 | \n", "-61.52104 | \n", "-177 | \n", "
2 | \n", "86005311 | \n", "16.09177 | \n", "-61.52091 | \n", "-185 | \n", "
3 | \n", "86005311 | \n", "16.08940 | \n", "-61.52078 | \n", "-188 | \n", "
4 | \n", "86005311 | \n", "16.08703 | \n", "-61.52066 | \n", "-192 | \n", "
... | \n", "... | \n", "... | \n", "... | \n", "... | \n", "
294316 | \n", "JR336 | \n", "15.28529 | \n", "-57.01258 | \n", "-5276 | \n", "
294317 | \n", "JR336 | \n", "15.28705 | \n", "-57.00994 | \n", "-5277 | \n", "
294318 | \n", "JR336 | \n", "15.28883 | \n", "-57.00732 | \n", "-5278 | \n", "
294319 | \n", "JR336 | \n", "15.29057 | \n", "-57.00467 | \n", "-5277 | \n", "
294320 | \n", "JR336 | \n", "15.29234 | \n", "-57.00203 | \n", "-5276 | \n", "
294321 rows × 4 columns
\n", "