mTPI는 능선과 계곡 형태를 구분합니다. 각 위치의 고도 데이터에서 인근 지역의 평균 고도를 빼서 계산합니다. mTPI는 반경 (km): 115.8, 89.9, 35.5, 13.1, 5.6, 2.8, 1.2의 이동 창을 사용합니다. JAXA의 ALOS DEM (EE에서 JAXA/ALOS/AW3D30_V1_1로 사용 가능)의 30m 'AVE' 밴드를 기반으로 합니다.
Conservation Science Partners (CSP)의 생태학적으로 관련된 지형학(ERGo) 데이터 세트, 지형 및 지형학에는 지형 및 지형학 (즉, 토지 패싯) 패턴에 관한 상세한 다중 스케일 데이터가 포함되어 있습니다. 이러한 데이터는 다양한 용도로 사용될 수 있지만, 원래 목적은 기후 적응 계획에 적합한 지형 및 지형학적 분류와 지도를 개발하는 것이었습니다. 미래 기후 조건과 생태학적 반응에 대한 불확실성이 크기 때문에 변화가 없을 가능성이 높은 요소에 관한 정보를 제공하면 관리자가 강력한 기후 적응 계획을 수립할 수 있는 강력한 기반이 됩니다. 이러한 지형의 특징은 해상도에 민감하므로 특정 지수의 범위와 특성을 고려하여 가능한 가장 높은 해상도를 제공합니다.
mTPI는 능선과 계곡 형태를 구분합니다. 각 위치의 고도 데이터에서 인근 지역 내 평균 고도를 빼서 계산합니다. mTPI는 반경 (km): 115.8, 89.9, 35.5, 13.1, 5.6, 2.8, 1.2의 이동 창을 사용합니다. JAXA의 ALOS의 30m 'AVE' 대역을 기반으로 합니다.
[null,null,[],[[["\u003cp\u003eThe ALOS mTPI dataset provides a global, multi-scale topographic position index derived from ALOS DEM, distinguishing ridges from valleys.\u003c/p\u003e\n"],["\u003cp\u003eIt's calculated by subtracting the mean elevation within a neighborhood from each location's elevation, using moving windows of varying radii.\u003c/p\u003e\n"],["\u003cp\u003eDeveloped by Conservation Science Partners, this dataset is suitable for climate adaptation planning and ecological studies.\u003c/p\u003e\n"],["\u003cp\u003eThe data is available at a 270-meter resolution and covers the period from January 24, 2006, to May 13, 2011.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset is licensed under CC-BY-NC-SA-4.0 and is accessible through Google Earth Engine.\u003c/p\u003e\n"]]],["The dataset, provided by Conservation Science Partners, spans from 2006-01-24 to 2011-05-13 and features the ALOS Multi-scale Topographic Position Index (mTPI). The mTPI, calculated using elevation data, distinguishes ridges from valleys. It uses moving windows to calculate mean elevation within various radii. The data's primary application was to inform climate adaptation planning, quantifying landscape features with consideration to resolution sensitivity, with a pixel size of 270 meters and ranging from -3758\\* to 10963\\*.\n"],null,["# Global ALOS mTPI (Multi-Scale Topographic Position Index)\n\nDataset Availability\n: 2006-01-24T00:00:00Z--2011-05-13T00:00:00Z\n\nDataset Provider\n:\n\n\n [Conservation Science Partners](https://www.csp-inc.org/)\n\nTags\n:\n[aspect](/earth-engine/datasets/tags/aspect) [csp](/earth-engine/datasets/tags/csp) [elevation](/earth-engine/datasets/tags/elevation) [elevation-topography](/earth-engine/datasets/tags/elevation-topography) [ergo](/earth-engine/datasets/tags/ergo) [geophysical](/earth-engine/datasets/tags/geophysical) [global](/earth-engine/datasets/tags/global) [landforms](/earth-engine/datasets/tags/landforms) [slope](/earth-engine/datasets/tags/slope) [topography](/earth-engine/datasets/tags/topography) \n\n#### Description\n\nThe mTPI distinguishes ridge from valley forms. It is calculated using\nelevation data for each location subtracted by the mean elevation within a\nneighborhood. mTPI uses moving windows of radius (km): 115.8, 89.9, 35.5,\n13.1, 5.6, 2.8, and 1.2. It is based on the 30m \"AVE\" band of JAXA's ALOS\nDEM (available in EE as JAXA/ALOS/AW3D30_V1_1).\n\nThe Conservation Science Partners (CSP) Ecologically Relevant Geomorphology\n(ERGo) Datasets, Landforms and Physiography contain detailed, multi-scale\ndata on landforms and physiographic (aka land facet) patterns. Although\nthere are many potential uses of these data, the original purpose for these\ndata was to develop an ecologically relevant classification and map of\nlandforms and physiographic classes that are suitable for climate adaptation\nplanning. Because there is large uncertainty associated with future climate\nconditions and even more uncertainty around ecological responses, providing\ninformation about what is unlikely to change offers a strong foundation for\nmanagers to build robust climate adaptation plans. The quantification of\nthese features of the landscape is sensitive to the resolution, so we\nprovide the highest resolution possible given the extent and characteristics\nof a given index.\n\n### Bands\n\n\n**Pixel Size**\n\n270 meters\n\n**Bands**\n\n| Name | Units | Min | Max | Pixel Size | Description |\n|-------|-------|---------|---------|------------|-------------------------------------------------------------------------------|\n| `AVE` | m | -3758\\* | 10963\\* | meters | ALOS-derived mTPI ranging from negative (valleys) to positive (ridges) values |\n\n\\* estimated min or max value\n\n### Terms of Use\n\n**Terms of Use**\n\n[CC-BY-NC-SA-4.0](https://spdx.org/licenses/CC-BY-NC-SA-4.0.html)\n\n### Citations\n\nCitations:\n\n- Theobald, D. M., Harrison-Atlas, D., Monahan, W. B., \\& Albano, C. M.\n (2015). Ecologically-relevant maps of landforms and physiographic diversity\n for climate adaptation planning. PloS one, 10(12),\n [e0143619](https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0143619)\n\n### Explore with Earth Engine\n\n| **Important:** Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please [register for Earth Engine access.](https://console.cloud.google.com/earth-engine)\n\n### Code Editor (JavaScript)\n\n```javascript\nvar dataset = ee.Image('CSP/ERGo/1_0/Global/ALOS_mTPI');\nvar alosMtpi = dataset.select('AVE');\nvar alosMtpiVis = {\n min: -200.0,\n max: 200.0,\n palette: ['0b1eff', '4be450', 'fffca4', 'ffa011', 'ff0000'],\n};\nMap.setCenter(-105.8636, 40.3439, 11);\nMap.addLayer(alosMtpi, alosMtpiVis, 'ALOS mTPI');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/CSP/CSP_ERGo_1_0_Global_ALOS_mTPI) \n[Global ALOS mTPI (Multi-Scale Topographic Position Index)](/earth-engine/datasets/catalog/CSP_ERGo_1_0_Global_ALOS_mTPI) \nThe mTPI distinguishes ridge from valley forms. It is calculated using elevation data for each location subtracted by the mean elevation within a neighborhood. mTPI uses moving windows of radius (km): 115.8, 89.9, 35.5, 13.1, 5.6, 2.8, and 1.2. It is based on the 30m \"AVE\" band of JAXA's ALOS ... \nCSP/ERGo/1_0/Global/ALOS_mTPI, aspect,csp,elevation,elevation-topography,ergo,geophysical,global,landforms,slope,topography \n2006-01-24T00:00:00Z/2011-05-13T00:00:00Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://www.csp-inc.org/)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/CSP_ERGo_1_0_Global_ALOS_mTPI)"]]
