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STRMprom

In order to qualify for inclusion in the SOTA scheme, a summit must have a topographic prominence of least 150 meters (termed P150) (or exceptionally, for summits in regions of especially low prominence, 100 meters, or P100). Ascertaining the exact prominence of candidate summits can be a time-consuming and painstaking task, depending on the information (usually maps) available. After they are identified and verified as meeting the prominence requirement, their local name and exact elevation still need to be determined before they can be assigned a SOTA reference number.

Some of the initial work can be done automatically using software that analyses digital elevation models. This is by no means sufficient, but provides a very useful starting point for many regions.

Accessible software tools for this task include LandSerf and Winprom. Unfortunately, these programs require more memory than usually available on common computers to analyse areas the size of many countries. This often reduces the availability of the analysis results for people interested in identifying and validating SOTA summits.

In an effort to overcome at least some of the difficulties in identification of candidate summits, I have developed an experimental software (SRTMprom) that focuses on identifying summits meeting a given prominence requirement using publicly-available high-quality topographic source data, requiring as little memory as possible to get the job done.

Below are some results obtained by using the SRTMprom software to identify peaks that meet a certain topographic prominence. It analyses a selection of Shuttle Radar Topography Mission data (SRTM Version 3.0, 1-arc second) collected in February 2000 by the Endeavour Space Shuttle (11 day mission STS-99).

Not all the peaks listed are actually eligible for SOTA since the SRTM elevation data by themselves are not accurate enough, especially for areas covered by trees, where the elevation recorded can be the top of the trees instead of the ground (so-called "penetration"), or in regions with narrow ravines. For the same reasons some eligible summits might not be identified.

Also, the definition of "prominence" causes a "winner takes all" effect, causing a summit reported as being only one meter higher than a neighbour to "hide" it.

Therefore, the SRTM data are a useful, but by no means sufficient, source of information to determine ultimately which summits are eligible for SOTA. Cross-checking with other sources of information, such as locally-produced maps or topological surveys of the region, is always necessary.

One way to try to reduce the false "detection" of summits is to run the software using a prominence greater than that required by the SOTA scheme for a particular geographical area: thus, using P0180 or P0130 instead of P0150 or P0100 respectively. In this way, it is found that summits identified with an extra 30 meters or so of "safety margin" have a higher probability of actually qualifying for SOTA in many regions.



On the maps, the blue "balloons" are the summits calculated from the SRTM data. The "SOTA" logos are at the location of SOTA summits.
Both are often so close that the icons hide each other. You need to zoom into the map to see all icons.

Prominence

(meters)

North limit

(degrees)

South limit

(degrees)

West limit

(degrees)

East limit

(degrees)

AE Arab Emirates P0150 27 22 051 057 .csv map
AE Arab Emirates P0180 27 22 051 057 .csv map
AL Albania P0150 47 39 019 022 .csv map
AL Albania P0180 47 39 019 022 .csv map
AT Austria P0150 50 46 009 018 .csv map
AT Austria P0180 50 46 009 018 .csv map
BA Bosnia and Herzegovina P0150 47 42 013 020 .csv map
BA Bosnia and Herzegovina P0180 47 42 013 020 .csv map
BE Belgium P0100 51 49 002 006 .csv map more
BE Belgium P0130 51 49 002 006 .csv map more
BG Bulgaria P0150 45 41 022 029 .csv map
BG Bulgaria P0180 45 41 022 029 .csv map
CA Prince Edward Island P0150 48 45 064 062 .csv map
CA Prince Edward Island P0180 48 45 064 062 .csv map
CH Switzerland P0150 48 45 006 011 .csv map
CH Switzerland P0180 48 45 006 011 .csv map
CZ Czechia P0150 52 48 012 019 .csv map
CZ Czechia P0180 52 48 012 019 .csv map
DE Germany P0150 55 47 005 016 .csv map
DE Germany P0180 55 47 005 016 .csv map
DK Denmark P0100 58 54 008 015 .csv map
DK Denmark P0130 58 54 008 015 .csv map
ES Spain P0150 44 36 010 004 .csv map
ES Spain P0180 44 36 010 004 .csv map
FR France P0100 52 42 005 009 .csv map more
FR France P0130 52 42 005 009 .csv map more
FR Martinique P0150 15 14 062 060 .csv map more
FR Corsica P0150 44 41 008 010 .csv map more
FR France P0150 52 42 005 009 .csv map more
FR Martinique P0180 15 14 062 060 .csv map more
FR Corsica P0180 44 41 008 010 .csv map more
FR France P0180 52 42 005 009 .csv map more
GB Great Britain P0150 59 50 010 002 .csv map
GB Great Britain P0180 59 50 010 002 .csv map
GR Greece P0150 42 34 019 027 .csv map
GR Greece P0180 42 34 019 027 .csv map
HK Hong Kong P0150 23 22 113 115 .csv map
HK Hong Kong P0180 23 22 113 115 .csv map
HR Croatia P0150 47 42 013 020 .csv map
HR Croatia P0180 47 42 013 020 .csv map
HU Hungary P0150 49 45 016 023 .csv map
HU Hungary P0180 49 45 016 023 .csv map
IL Israel P0150 34 29 034 037 .csv map
IL Israel P0180 34 29 034 037 .csv map
IT Italy P0150 48 36 006 019 .csv map
IT Italy P0180 48 36 006 019 .csv map
LI Lichtenstein P0150 48 45 006 011 .csv map
LI Lichtenstein P0180 48 45 006 011 .csv map
LU Luxemburg P0100 51 49 005 007 .csv map
LU Luxemburg P0130 51 49 005 007 .csv map
ME Montenegro P0150 44 41 018 021 .csv map
ME Montenegro P0180 44 41 018 021 .csv map
MK Republic of Macedonia P0150 43 40 020 024 .csv map
MK Republic of Macedonia P0180 43 40 020 024 .csv map
NL Netherlands P0100 54 51 003 008 .csv map
NL Netherlands P0130 54 51 003 008 .csv map
NO Norway P0150 60 57 004 013 .csv map
NO Norway P0180 60 57 004 013 .csv map
PL Poland P0150 56 48 014 025 .csv map
PL Poland P0180 56 48 014 025 .csv map
PT Portugal Madeira P0150 34 32 018 016 .csv map more
PT Portugal P0150 43 36 010 006 .csv map more
PT Portugal - Madeira P0180 34 32 018 016 .csv map more
PT Portugal P0180 43 36 010 006 .csv map more
RO Romania P0150 49 43 020 030 .csv map
RO Romania P0180 49 43 020 030 .csv map
RS Serbia P0150 47 41 018 023 .csv map
RS Serbia P0180 47 41 018 023 .csv map
SE Sweden P0150 60 55 011 025 .csv map
SE Sweden P0180 60 55 011 025 .csv map
SI Slovenia P0150 47 45 013 017 .csv map
SI Slovenia P0180 47 45 013 017 .csv map
SK Slovakia P0150 50 47 016 023 .csv map
SK Slovakia P0180 50 47 016 023 .csv map
SN Senegal P0100 16 12 018 011 .csv map
SN Senegal P0130 16 12 018 011 .csv map
SN Senegal P0150 16 12 018 011 .csv map
SN Senegal P0180 16 12 018 011 .csv map
TN Tunisia P0150 38 30 007 012 .csv map
TN Tunisia P0180 38 30 007 012 .csv map
US United States of America above 2000m-WY P0150 50 25 125 066 .csv map

Duplicate SOTA references




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